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October 23, 2014

Search: Viscous blood is flowing through an artery partially clogged by cholesterol. A surgeon wants to remove enough of the cholesterol to double the flow rate of blood through this artery

Number of results: 17,224

Physics
Viscous blood is flowing through an artery partially clogged by cholesterol. A surgeon wants to remove enough of the cholesterol to double the flow rate of blood through this artery. If the original diameter of the artery is D , what should be the new diameter (in terms of D...
April 23, 2012 by Melissa

Biochem
1 ml of whole blood is collected and centrifuged to obtain a plasma sample. The volume of the plasma sample is 600 microlitres. A 1 in 4 dilution of the plasma is made and analysed using a cholesterol assay like the one you performed in the laboratory. 10 microlitres of both ...
September 30, 2012 by Liv

Biochem
1 ml of whole blood is collected and centrifuged to obtain a plasma sample. The volume of the plasma sample is 600 microlitres. A 1 in 4 dilution of the plasma is made and analysed using a cholesterol assay like the one you performed in the laboratory. 10 microlitres of both ...
September 30, 2012 by Liv

Chemisty
A patient has been trying to achieve total blood cholesterol of 175 mg or less per 100 mL. A recent test result of a 3 mL blood sample found that 4.95 mg cholesterol were present. Has the patient reached the goal?
April 10, 2012 by Wyatt

Calculus Help Please!!!
When blood flows along a blood vessel, the flux F (the volume of blood per unit time that flows past a given point) is proportional to the fourth power of the radius R of the blood vessel: F = kR4 (This is known as Poiseuille's Law.) A partially clogged artery can be expanded ...
April 2, 2014 by Isik

chemistry
normal value for blood cholesterol is 200mg/dL. If normal adult has a total blood volume if 5L, how much total cholesterol is present one dl is a tenth of a liter, so 200mg/dl (1liter/10dl)(5)
September 12, 2006 by michele

chemistry
The solubility of cholesterol in 95% ethanol is 32.5 mg/mL at 37C and 11.5 mg/mL at 7C. How much 95% ethanol is required to dissolve 1 g of cholesterol at 37C? If that volume of warm, saturated solution is cooled in a refrigerator to 7C, how much cholesterol will crystallize?
September 28, 2009 by lisa

Physics
Blood flows through a section of a horizontal artery that is partially blocked by a deposit along the artery wall. As a hemoglobin molecule moves from the narrow region into the wider region, its speed changes from v2 = 0.800 m/s to v1 = 0.422 m/s. What is the change in ...
June 20, 2012 by Hannah

biostatistics
8. The following data were collected in a clinical trial to compare a new drug to a placebo for its effectiveness in lowering total serum cholesterol. Generate a 95% confidence interval for the difference in mean total cholesterol levels between treatments. New Drug (n=75) ...
November 26, 2011 by natasha

math
A patient is not allowed to have more than 300 milligrams of cholesterol per day from a diet of eggs and meat. Each egg provides 150 milligrams of cholesterol. Each ounce of meat provides 100 milligrams of cholesterol.
February 23, 2014 by Anonymous

college biology
Why LDL is considered the bad cholesterol and HDL the good cholesterol
September 11, 2012 by amy

Statistics
Suppose the variable x is the number of minutes walked each week and the variable y is the blood cholesterol level given by the following table: x y 31 290 60 278 90 259 120 238 150 219 Using the regression equation, predict cholesterol levels when walking is 175 minutes per ...
May 20, 2011 by Fabi

Statistics
Suppose the variable x is the number of minutes walked each week and the variable y is the blood cholesterol level given by the following table: x y 31 290 60 278 90 259 120 238 150 219 Using the regression equation, predict cholesterol levels when walking is 175 minutes per ...
May 24, 2013 by Ari

health
A man with a long history of increased blood cholesterol levels has to have part of his carotid artery removed because a blockage has developed there. If the carotid bodies are removed during this procedure.which of the following is most likly to occur.
June 27, 2012 by carol

Computers
Create a class named Checkup with fields that hold a patient number, two blood pressure figures (systolic and diastolic), and two cholesterol figures (LDL and HDL). Include methods to get and set each of the fields. Include a method named computeRatio() that divides LD ...
April 18, 2007 by Andreah

biostatistics
A studyis run to estimate the mean total cholesterol level in children 2 to 6 years of age. A sample of 9 participants is selected and their total cholesterol levels are measured as follows: 185 225 240 196 175 180 194 147 223 Generate a 95% confidence interval for the true ...
November 7, 2011 by natasha

PHysics
A medical technician is trying to determine what percentage of a patient's artery is blocked by plaque. To do this, she measures the blood pressure just before the region of blockage and finds that it is 1.20104 Pa, while in the region of blockage it is 1.15104 Pa. ...
November 29, 2007 by Molly

statistics
mean cholesterol is 175mg/dl..standard deviation =20mg/dl assume approx normal distribution ..is varied. what percentage has a cholesterol level above 155mg/dl?
July 7, 2012 by michelle

statistics
The cholesterol levels of young women aged 20 to 34 vary approximately normal with mean 185 milligrams per deciliter and standard deviation 39 mg/dl. Cholesterol levels for men vary with mean 222mg/dl and standard deviation 37 mg/dl Sandy's cholesterol level is 220 her fathers...
September 5, 2012 by Gee

algebra & trigonometry
A patient is not allowed to have more than 300 milligrams of cholesterol per day from a diet of eggs and meat. Each egg provides 150 milligrams of cholesterol. Each ounce of meat provides 100 milligrams of cholesterol. Write an inequality that describes the patients dietary ...
February 9, 2014 by daniel

nath
the graph shows the annual heart attack rate per 10,000 men as a function of blood cholesterol level . Use the graph to approximate the annual heart attack rate per 10,000 men for those whose blood cholesterol level is 250mg/dl.
September 20, 2010 by Anonymous

chemistry
In propanol, cholesterol is 2.7 times more soluble at 43C than at 20C. If a saturated propanol solution is prepared at 43C , what proportion of the cholesterol will crystallize upon cooling to 20C?
November 30, 2010 by lisa

Statistics
The serum cholesterol levels in men aged 18 to 24 are normally distributed with a mean of 178.1 and a standard deviation of 40.7. A group of 9 men aged 18 to 24 randomly selected. 1. Find the probability that there are at least 2 men in the group whose serum cholesterol level ...
May 3, 2012 by Kim

statistics
Experts consider high serum cholesterol levels to be associated with an increased incidence of coronary heart disease .suppose that the logarithm of cholesterol levels for males in a given age bracket are normally distributed with mean of 2.35 and a standard deviation of 12 . ...
November 14, 2010 by koky

Physics
An artery supplying heat muscle with blood is occluded to 13.9% of its original radius by a clot. By what percent is the blood flow through this artery reduced.
March 17, 2014 by Paul

physical edu
1. Cardiovascular disease is the number one overall killer of Americans kills more than cancer, chronic respirator disease, accidents and diabetes combined! its False right? 2. Only 25% of Americans engage in physical activity at the intensity and duration needed for health ...
June 22, 2012 by Andy

elementary statistics
The distribution of cholesterol levels in teenage boys is approximately normal with u=170 and o=30. Levels above 200 warrent attention. Find the probability that boy has a cholesterol level greater than 225.
May 29, 2011 by joanne

Physics
A medical technician is trying to determine what percentage of a patient's artery is blocked by plaque. To do this, she measures the blood pressure just before the region of blockage and finds that it is 1.2010^4 Pa, while in the region of blockage it is 1.1510^4 Pa. ...
November 12, 2008 by Andrea

biochemistry
given 3 fat samples and told that one of them contains cholesterol,outline the test you would use to identify which of these samples contains cholesterol.
April 27, 2011 by johanna

Biochemistry 1
1. Cholesterol is the most abundant steroid in the human body. Describe at least 3 important functions for cholesterol in the body, either direct functions or as a precursor for other substances.
April 20, 2011 by Mangetty

statistics
9) A 95% confidence interval for the true mean cholesterol of adult males based on 25 randomly selected subjects extends from 175 mg/L to 250 mg/L. A proper interpretation of the confidence interval would be that: A) 95% of the population has a cholesterol level between 175 ...
July 2, 2012 by Anonymous

Math
a technician draws 10 cc of a patients blood to be tested for cholesterol and for red blood cells. identify a.the sample b.the population c. the variable being studied i attempted but im not sure if its right...i said a) the 10 cc of blood b) the patients blood c)the blood is ...
September 20, 2011 by Diana

Anatomy
What lipoprotein is associated with cholesterol and the production changes in blood vessles?
January 30, 2009 by Lori

statistics
Cholesterol levels of adult males are approximately normally distributed with a mean of mg/dL and a listed standard deviation of . Some researchers claim that the standard deviation of cholesterol levels of adult males is less than . Suppose that we want to carry out a ...
February 27, 2010 by anaya

Statistics
The distribution of cholesterol levels of the residents of a state closely follows the normal curve. Investigators want to test whether the mean cholesterol level of the residents is 200 mg/dL or lower. A simple random sample of 12 residents has a mean cholesterol level of 185...
August 4, 2013 by Audrey

Statistics
Cholesterol levels of adult males are approximately normally distributed with a mean of mg/dL and a listed variance of . Some researchers claim that the variance of cholesterol levels of adult males is less than . Suppose that we want to carry out a hypothesis test to see if ...
April 29, 2011 by Michelle

statistics
Cholesterol levels of adult males are approximately normally distributed with a mean of mg/dL and a listed standard deviation of . Some researchers claim that the standard deviation of cholesterol levels of adult males is less than . Suppose that we want to carry out a ...
February 27, 2010 by anaya

physics
Due to a disease the main artery is enlarged and the area of cross-section bacame 1.6 times the previous value. The speen of the blood in unenlarged artery is 0.4 m/s. what is the excess pressure on the walls of the artery due to enlargement. (density of blood is 1060 kg/m^3
January 19, 2012 by Anonymous

BioStats
An observational study is conducted to investigate the association between age and total serum cholesterol. The correlation is estimated at r = 0.35. The study involves n=125 participants and the mean (std dev) age is 44.3 (10.0) years with an age range of 35 to 55 years, and ...
July 5, 2013 by Simone

Statistics
A scientist in Smallville tested the cholesterol of a random sample of 35 town residents. He constructed the following confidence interval: t-interval for μ: with 99.00% Confidence: 188 < μ(Cholesterol) < 206 What is the margin of error? A) 18 B) 9 C) 1.09 D) ...
November 6, 2013 by Katelyn

Biochemistry 1
1. You are given three fat samples and told that one of them contains cholesterol. State and clearly outline the test you would use to identify which of these samples contains cholesterol. Hint: Name of test, Procedure of test, and Results.
April 20, 2011 by Mangetty

Nutition
"The body absorbs lipids mostly within the small intestine. The gallbladder secrets a chemical called bile to aid in the breakdown of this fat. From there the fat is broken down farther by the enzymes the pancreas makes. The mixture of "fatty acids, partially digested ...
August 22, 2010 by Nancy

college biology
Describe some reasons why a patient might have abnormally low blood cholesterol.
September 11, 2012 by amy

Chemistry
2. [4 points] Serum cholesterol levels were monitored to investigate the effect of physical training. Prior to this training, blood samples were acquired from each of the 12 subjects and were tested for cholesterol level. After a week-long training period of daily running, the...
April 7, 2010 by Alex

Physics
The blood speed in a normal segment of a horizontal artery is 0.166 m/s. An abnormal segment of the artery is narrowed down by an arteriosclerotic plaque to 1/5 of its normal cross-sectional area. What is the difference in blood pressure between the normal and constricted ...
February 8, 2013 by Ashley

Biology
. Which of the following parts of the circulatory system carries oxygenated blood? A An artery moving blood from the heart to the lungs B. A vein moving blood to the heart from the body C. An artery moving blood from the heart to a muscle cell D. A venule moving blood to the ...
July 14, 2014 by Dulce

Biology/ a&p
Which of the following parts of the circulatory system carries oxygenated blood? A. An artery moving blood from the heart to the lungs B. A vein moving blood to the heart from the body C. An artery moving blood from the heart to a muscle cell D. A venule moving blood to the ...
July 24, 2014 by J

Physics
Angioplasty is a technique in which arteries partially blocked with plaque are dilated to increase blood flow. By what factor must the radius of an artery be increased in order to increase blood flow by a factor of 16?
November 7, 2010 by BG

statistics
An experimental egg farm is raising chickens to produce low cholesterol eggs. A lab tested 12 randomly selected eggs and found that the mean amount of cholesterol was x = 186 mg. The sample standard deviation was found to be s = 19.0 mg on this group. Assume that the ...
April 6, 2010 by looking for someone to varify my work please

physics
Suppose an occlusion in an artery reduces its diameter by 22%, but the volume flow rate of blood in the artery remains the same. By what factor has the pressure drop across the length of this artery increased?
April 20, 2010 by ryan

physics
Suppose an occlusion in an artery reduces its diameter by 22%, but the volume flow rate of blood in the artery remains the same. By what factor has the pressure drop across the length of this artery increased?
April 21, 2010 by Ryan

Biochemistry
The concentration of cholesterol in blood from a fasting individual is reported as 185mg %, where mg% is mg/100 mL. Convert this concentration to moles/Liter.
September 1, 2009 by Emma

chemistry
The boiling point of diethyl ether CH3CH2OCH2CH3 is 34.500C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in diethyl ether is cholesterol . How many grams of cholesterol, C27H46O (386.6 g/mol), must be dissolved in 263.0 grams of diethyl ether to raise the ...
January 31, 2010 by allie

Chemistry
The boiling point of diethyl ether CH3CH2OCH2CH3 is 34.500C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in diethyl ether is cholesterol . How many grams of cholesterol, C27H46O (386.6 g/mol), must be dissolved in 208.0 grams of diethyl ether to raise the ...
October 5, 2014 by Charlotte

Biology
A 50 year old male who is not overweight and has normal blood cholesterol levels suffers a heart attack. Propose a possible explanation i think the answer would be genetics...
October 1, 2014 by Sam

??/
1. Oxygen moves easily out of blood capillaries into cells because ___________. (1 point) the walls are very thin because it is very small because other gases push it out cells need the oxygen 2. Which of the following statements is false? (1 point) Arteries carry blood away ...
January 31, 2013 by Anonymous

science
1. Oxygen moves easily out of blood capillaries into cells because ___________. (1 point) the walls are very thin because it is very small because other gases push it out cells need the oxygen 2. Which of the following statements is false? (1 point) Arteries carry blood away ...
January 31, 2013 by Anonymous

Intro-Physics
Using a Doppler ultrasound, the velocity of blood flow in a vein or an artery can be measured. In a particular patient, the flow in a particular artery is found to be 30 cm/s at one point, and 20 cm/s at a point farther from the heart. If the two points in the artery are 50 cm...
September 11, 2014 by Ilayda

Statistics
The mean serum cholesterol level in the population of males who do not develop heart disease is known to be 219 mg/100 ml. Suppose you perform a study to investigate whether the mean serum cholesterol levels in males who do develop heart disease is higher than that of the ...
December 6, 2010 by Mack

PHYSICS
An artery branches into two smaller veins, identical arteries as shown in the diagram. The largest artery has a diameter of 10 mm. The two branches have the same diameter = 5 mm. The average speed of the blood in the main artery is given in the diagram. The blood has a density...
August 14, 2011 by Zuen-Lee

Physics
An artery branches into two smaller veins, identical arteries as shown in the diagram. The largest artery has a diameter of 10 mm. The two branches have the same diameter = 5 mm. The average speed of the blood in the main artery is given in the diagram. The blood has a density...
August 10, 2011 by Alex

Physics
An artery branches into two smaller veins, identical arteries as shown in the diagram. The largest artery has a diameter of 10 mm. The two branches have the same diameter = 5 mm. The average speed of the blood in the main artery is given in the diagram. The blood has a density...
August 10, 2011 by Alex

Statistics 7
A doctor wants to estimate the HDL cholesterol of all 20 to 29 year old females. How many subjects are needed to estimate the HDL cholesterol within 2 points with 99% confidence assuming s-17.8 based on earlier studies. Suppose the doctor would be content with 90 % confidence...
May 5, 2013 by Megan

Physics
Consider an artery with diameter 10 mm which runs horizontally. Somewhere along the artery there is a 3 cm long constriction which reduces the diameter to 5.40 mm. Assume that before and after the constriction the blood flows at a rate of 0.310 m/s, and that the blood ...
December 1, 2012 by Sam

anatomy
The second branch of the aorta takes blood to the A.heart B.right common carotid artery C.left common cartid artery D.left subclavian artery would it be A not sure
September 28, 2008 by uknown

physics
The curved artery can be approximated as a semicircular arch whose diameter is 4.9 cm. If blood flows through the aortic arch at a speed of 0.35 m/s, what is the magnitude (in m/s2) of the blood's centripetal acceleration?
March 27, 2013 by Billy

Statistics
Blood samples from 10 persons were sent to each of two labs for cholesterol determination. The measurements are recorded below: Table 1. Serum Cholesterol measurements of Lab 1 and Lab 2 Subject Lab 1 Lab 2 1 296 318 2 268 287 3 244 260 4 272 279 5 240 245 6 244 249 7 282 294 ...
July 21, 2014 by Peter

physics
The volume flow rate in an artery supplying the brain is 3.10 10-6 m3/s. (a) If the radius of the artery is 4.50 10-3 m, determine the average blood speed. 1 m/s (b) Find the average blood speed at a constriction in the artery if the constriction reduces the radius by a factor...
December 12, 2010 by sarah

7 STATS MATHGURU PLEASE HELP
A doctor wants to estimate the HDL cholesterol of all 20-29 year old females. How many subjects are needed to estimate the HDL cholesterol within 2 points with 99%confidence assuming s=17.8 based on earlier studies? Suppose the doctor would be content with 90% confidence. How ...
May 5, 2013 by Megan

Statistics
I'm taking stats online which is making it even more difficult for me and I have nowhere to begin when answering this question. 1. A pharmaceutical industry claimed that their new product will lower the cholesterol level by an average of 14.5. To verify the claim, a laboratory...
June 22, 2014 by Michelle

stats
blood cholesterol level of all men age 20-24 follows N(188,41) where the units for the men and standard deviation are in mg/dl. what is the probability that the sample mean takes a value between 185 and 191 if we sample 1000 men
October 12, 2012 by sam

Anatomy & Physiology
Does the direction of blood flow through blood vessels in this order? Left atruim,left ventricle,pulmonary artery,pulmonary veins,
August 14, 2008 by debbie

Calculus-Math
The speed S of blood that is r centimeters from the center of an artery is given below, where C is a constant, R is the radius of the artery, and S is measured in centimeters per second. Suppose a drug is administered and the artery begins to dilate at a rate of dR/dt. At a ...
August 9, 2014 by Lorine

Science/Health
2. Which of the following explains why the heart is organized so that it pumps blood to two different locations? A. to supply blood to two different sides of the body B. to allow a way for the blood to pick up new blood cells C. to move oxygen-poor blood through the lungs and ...
May 21, 2014 by mstv1112

Calculus-Math
The speed S of blood that is r centimeters from the center of an artery is given below, where C is a constant, R is the radius of the artery, and S is measured in centimeters per second. Suppose a drug is administered and the artery begins to dilate at a rate of dR/dt. At a ...
August 9, 2014 by Lorine

health
what does a high cholesterol eat?
May 26, 2011 by bonifacio venacio

Chemistry
does anyone know the structure of cholesterol after dehydration?
December 1, 2008 by John

Chemistry
does anyone know the structure of cholesterol after dehydration?
December 1, 2008 by John

health/stats
can cholesterol follow a normal distribution exactly? why or why not?
October 17, 2014 by rebekah

statistics
Suppose that, in fact, the blood cholesterol level of all men aged 20 to 34 follows the normal distribution with mean of u = 188 milligrams per deciliter (mg/dl) and standard deviation = 41 mg/dl. 1. Choose an SRS of 100 men from this population. What is the sampling ...
February 4, 2013 by Zachovia

calculus
A heart attack victim is given a blood vessel dilator to increase the radii of the blood vessels. After receiving the dilator, the radii of the affected blood vessels increase at about 1% per minute. According to Poiseulle's law, the volume of blood flowing through a vessel ...
July 4, 2010 by theo

Math - Calculus
Water is flowing in a cylindrical pipe of radius 1 inch. Because water is viscous and sticks to the pipe, the rate of flow varies with distance from the center. The speed of the water at distance r inches from the center is 10(1-(r^2)) per second. What is the rate (in cubic ...
December 15, 2012 by Elsi

math
If velocity v of blood flow at distance r from the center of an artery of radius R is given by v = k (R^2 - r^2), constant k > 0, find the average velocity v along the radius of an artery using 0 to R as the limits of integration
May 1, 2013 by Steve

science
decomposing 0.00153 moles cholesterol will release what volume of hydrogen atoms?
October 12, 2012 by cris

statistics
Hi, Could anyone help me please, because I'm not sure with my answer, Thank you so much for your help and value time. Blood samples from 10 persons were sent to each of two labs for cholesterol determination. The measurements are recorded below: Table 1. Serum Cholesterol ...
July 21, 2014 by Jonhny

Statistics
Hi, Could anyone help me please, because I'm not sure with my answer, Thank you so much for your help and value time. Blood samples from 10 persons were sent to each of two labs for cholesterol determination. The measurements are recorded below: Table 1. Serum Cholesterol ...
July 21, 2014 by Jonhny

biology
state two roles of cholesterol in the membrane please could someone help me out sam
October 31, 2007 by sam

Biology
The muscles of the heart are constructed out of: A) nucleotides B) complex carbohydrates C) cholesterol D) proteins Thank you.
November 5, 2010 by Bee

Chemistry
Classify each as carbohydrate, protein, lipid, or nucleic acid. 1. Starch 2. Cholesterol 3. Steroids 4. Glycogen
October 6, 2014 by Kate

Math
A diet management system produces two types of foods A and B. Food A contains (5,15,1,2) mg. per ounce of cholesterol, calcium, iron and vitamin C respectively and Food B contains (5,15,1,2) mg. per ounce of the same nutrients in order respectively A nutritionist wishes to ...
February 26, 2011 by Tracy

Anatomy
Is this the correct direction of blood flow through blood vessels Right atrium, right ventricle, pulmonary artery, pulmonary veins, left atrium, left ventricle.If not please help.
May 27, 2008 by Jin Kobeaux

Economics
who knows how to measure the true cost of a pint of B-Positive blood? A.None of these B.Any competent medical authority C.Only the Surgeon General of the United States D.An economist E.A clerk at the blood bank
October 11, 2010 by Hayli

biology
What effect does limiting fat and cholesterol intake have on the body's ability to produce these hormones and how will these manifest?
February 2, 2011 by Anonymous

Physics
The blood flow rate through the aorta is typically 103 cm^3/s, and a typical adult has about 4.9 liters of blood. (a) How long does it take for all your blood to pass through the aorta? ___________s (b) If your aorta has a diameter of 2.1 cm, what is the speed of blood as it ...
June 6, 2012 by Alex

Science-3 question
1. Which of the following is not a function of the circulatory system? breaks down large molecules delivers oxygen to body cells **** takes carbon dioxide away from body cells fights infection 2. Which of the following explains why the heart is organized so that it pumps blood...
May 10, 2014 by Princess Anna

Plz, check my answers.
1. Which of the following is not a function of the circulatory system? breaks down large molecules delivers oxygen to body cells **** takes carbon dioxide away from body cells fights infection 2. Which of the following explains why the heart is organized so that it pumps blood...
May 10, 2014 by Princess Anna

biology
I'm doing a paper on a case study. The man, John Doe, is 55 years old, has high cholesterol, and has experienced frequent chest pains, profuse sweating, dizziness, and shallow breathing. These are the questions I have to answer: 1) What physiological response helped John ...
January 25, 2011 by Anonymous

health
which of the following could reduce your cholesterol?A.cheese, B.fatty foods, C.cakes,pies, D. a low-fat diet.is D the correct answer.
August 19, 2008 by S

chemistry
What is the molecular mass of cholesterol if 0.5731 mol weighs 221.6g? I need to show my work using conversion factors. thanks
November 17, 2010 by john

Health
Its important to choose foods that provide more ________. A. Potassium B. Cholesterol C. Mercury D. Carbohydrates I put D and got it wrong.. What could it be?
August 29, 2012 by Justin

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