The blood speed in a normal segment of a horizontal artery is 0.111 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

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  1. Physics

    Blood flow rates in the umbilical cord can be found by measuring the Doppler shift of the ultrasound signal reflected by the red blood cells. If the source emits a frequency f, what is the measured reflected frequency fR? Assume that all of the red blood

  2. physical science

    On a position vs. time graph, which feature would represent motion in the negative direction over time? a an upward-sloping line segment b a vertical line segment c a downward-sloping line segment d a horizontal line segment

  3. PHYSICS

    Blood flows through a major artery at 1.3 m/s for 0.40 s, then at 0.70 m/s for another 0.40 s through a smaller artery. Is the average speed of the blood 1.0 m/s, greater than 1.0 m/s, or less than 1.0 m/s ?Verify your answer to Part A by calculating the

  4. physics

    A typical arteriole has a diameter of 0.080 mm and carries blood at the rate of 9.6×10−5cm3/s. \ a. What is the speed of the blood in an arteriole? b. Suppose an arteriole branches into 8800 capillaries, each with a diameter of 6.0×10−6m.What is the

  5. Physics

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  6. 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 1.20×10^4 Pa, while in the region of blockage it is

  7. 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

  8. physics

    A tennis player moves back and forth along the baseline while waiting for her opponent to serve, producing the position-versus-time graph shown in the figure. (The vertical axis is marked in increments of 1 m and the horizontal axis is marked in increments

  9. physics

    1.) Water flows from a 2 cm diameter pipe, at a speed of 0.35m/sec. How long will it take to fill a 10 liter container? 2.) A horizontal segment of pipe tapers from a cross-sectional area of 50 cm^2 to 0.5 cm? The pressure at the larger end of the pipe is

  10. 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

  11. 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)

  12. 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

  13. 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?

  14. 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

  15. Physics

    Water, with a density of ρ=1180 kg/m3, flows in a horizontal pipe. In one segment of the pipe, the flow speed is v1=7.73 m/s. In a second segment, the flow speed is v2=3.77 m/s. What is the difference between the pressure in the second segment (P2) and

  16. 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

  17. Physics

    The human heart is a mechanical pump. The aorta is a large artery that carries oxygenated blood away from the heart to various organs in the body. For an individual at rest, the blood in the aorta (of radius 1.25 cm) flows at a rate of 5*103 cm3/min (5

  18. 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?

  19. physics

    a red blood cell travels at a speed of 40 cm/s in a large artery. a sound with a frequency of 100 kHz enters a blood opposite the direction flow. calculate the frequency of sound reflected from the cell and detected by a receiver. (v = 1500 m/s)

  20. Physiology

    A patient’s blood cell count shows 15,000 white blood cells (WBCs) per µL of blood. A normal WBC count is about 9,000 cells/µL (the normal range is actually 4,000 to 11,000 WBCs/µL). What percent of normal is this particular patent’s WBC count?

  21. math

    According to a national study, 45% of american adults have hypertension, 20% have hypotension, and 35% have normal blood pressure. A sample of 150 adults was taken and the following data were collected. Hypertensive: 54, Normal: 69, Hypotensive: 27. Test

  22. 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

  23. 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

  24. human growth and development

    Five year old Elbert caught eight colds last year.His doctor would explain that catching eight colds in one year is: A)normal, It's sign that Elbert's lungs are fully developed B)normal.They helped Elbert to build up natural immunities C)abnormal.Elbert

  25. physics

    A 17.9 kg block is dragged over a rough, horizontal surface by a constant force of 119 N acting at an angle of 30◦ above the horizontal. The block is displaced 40.7 m, and the coefficient of kinetic friction is 0.111. what is the final speed

  26. Primavera Bio 9A

    Read the following description. Clusters of cells located near the carotid artery in the neck sense the amount of oxygen in the blood. If the level is too low, these arteries send signals to the brain that result in an increased breathing rate, which

  27. To Ms. Sue (PLEASE read!)

    To Ms. Sue - Laruen, Sunday, April 22, 2012 at 6:05pm The radial artery is found close to the inside part of your wrist near your thumb. To Ms. Sue - Ms. Sue, Sunday, April 22, 2012 at 6:11pm Right!! To Ms. Sue - Laruen, Sunday, April 22, 2012 at 6:12pm ok

  28. math

    10cm^3 of a normal specimen of human blood contains 1.2g of hemoglobin. How many grams does 22cm^3 of the same blood contain?

  29. physics

    The blood speed in a normal segment of a horizontal artery is 0.111 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

  30. 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

  31. physics

    Blood flows through a major artery at 1.3 m/sfor 0.40 s, then at 0.70 m/sfor another 0.40 s through a smaller artery. Part A Is the average speed of the blood 1.0 m/s, greater than 1.0 m/s , or less than 1.0 m/s? Verify your answer to Part A by calculating

  32. Physics

    A small artery has a length of 1.10×10−3m and a radius of 2.50×10−5m. If the pressure drop across the artery is 1.15 kPa, what is the flow rate through the artery? Assume that the temperature is 37 °C and the viscosity of whole blood is

  33. 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

  34. Physics

    What is the pressure difference required to make blood flow through artery of inner radius 2.0 mm and length 0.18 m at a speed of 5.6 cm/s? I used P1-P2 = speed*8*n*L/r squared n = viscosity of blood = 4 x 10e-3 L = .18 m r = 2 x 10e-3 m When plugged in I

  35. 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

  36. Physics

    The femoral artery carries blood to the leg and has a diameter of 12.5 mm. What is the resistance in a column of blood that is 2.20 cm long if the conductivity of blood is 0.630 Ω-1m-1?

  37. Physics - Matter

    The build-up of plaque on the walls of an artery decreases its diameter from 1.1 cm to 0.60 cm. If the speed of the blood flow is 0.15 m/s before reaching the region of plaque build-up, find the speed of blood flow within the plaque region. [3 marks]

  38. 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

  39. Chemistry

    Assume that the normal blood buffer contains 0.00080 M carbonic acid and 0.0085 M hydrogen carbonate, the pKa = 6.35 for carbonic acid and the volume of blood in the body is 7.00 L. The blood pH, due to disruption is now 7.20. What is the ratio of

  40. Anatomy & Physiology

    Does the direction of blood flow through blood vessels in this order? Left atruim,left ventricle,pulmonary artery,pulmonary veins,

  41. Medical physics

    1.A hypodermic needle of lenght 0.020m and inner radius 3.0 x10^-4 is used to force water at 20 degree celcious into the air at a flow rate of 1.0 x10^-7m^2 s-1 (a) what is the average velocity in the needle?(assume laminar flow), (b) what is the pressure

  42. physic

    a pipe is 40% blocked the water is coming into the region is moving at 8.5cm/s just before the blocked segment of pipe. What is the speed of the water as it goes through the partially blocked segment? By how many pascals does the pressure in the blocked

  43. physics

    A 17.9 kg block is dragged over a rough, horizontal surface by a constant force of 119 N acting at an angle of 30◦ above the horizontal. The block is displaced 40.7 m, and the coefficient of kinetic friction is 0.111. what is the final speed

  44. Physics HELP

    An ultrasound transducer used to measure the speed of blood cells is oriented at an angle of 45 degrees to the direction of the blood flow. if the frequency of the sound emitted by the transducer is 1.5 Mhz and the doppler shift is 268Hz, calculate the

  45. 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)

  46. Biology

    . A woman whose father was color blind (X-linked, recessive) and who has type A blood has accused a man who is himself color blind of fathering her child. The accused man has type B blood. For each of the following cases, indicate whether or not the man

  47. math

    The fraction 5Y3X/2Y8, in which x and Y stand for two unknown digits, represents a division which results in a quotient that is a whole number. Which of the following is (are) true? 1. X may equal 2. 11. X may equal 6 or 0. 111. X may equal 4. not just and

  48. bio

    Hi does anyone know where the following lead to/from renal artery and vein hepatic artery and vein umbilical artery and vein coronary

  49. bio

    Hi does anyone know where the following lead to/from renal artery and vein hepatic artery and vein umbilical artery and vein coronary

  50. Part 2

    o What will be printed if the input is 0? o What will be printed if the input is 100? o What will be printed if the input is 51? o What will be printed if the user enters ¿Wingding¿? o Is this design robust? If so, explain why. If not, explain what you

  51. Biophysics

    Consider the flow of blood through a large horizontal artery with 1.0 mm of diameter. The artery has a smooth reduction to an artery 0.5 mm in diameter. If the pressure of the blood in the larger artery is 8.00 x 104 Pa and the pressure in the smaller

  52. science

    A certain echocardiogram uses ultrasounds with a frequency f = 6.1130 MHz. The speed of sound in blood is 1570 m/s. The patient is aligned so that blood is flowing through the heart directly towards the transducer (the transducer produces and detects the

  53. 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.

  54. 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.

  55. 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.

  56. 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 1.20×104 Pa, while in the region of blockage it is

  57. 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

  58. physics

    Due to a disease the main artery is enlarged and the area of cross-section bacame 1.6 times the previous value. The s 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

  59. Physics

    The volume flow rate in an artery supplying the brain is 4.59E-6 m3/s. If the radius of the artery is 5.33 mm, determine the average blood speed.

  60. 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.

  61. 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?

  62. physics

    Suppose an obstruction in an artery reduces its radius by 16%, but the volume flow rate of the blood in the artery is remains the same. By what factor has the pressure drop across the length of this artery increased?

  63. 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

  64. 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

  65. chemistry

    The hydornium ion concentration in blood of three different patiens was: Patient [H30+] A 5.0 X 10^-8 B 3.1 X 10^-8 C 3.2 X 10^-8 What is the pH of each patient's blood? If the normal range is 7.30-7.50, which, if any, of these patient's have an abnormal

  66. Biology

    The pulmonary artery, which pumps blood from the heart to the lungs, has an inner radius of 1.34 mm and is 5.0 cm long. If the pressure drop between the heart and lungs is 420.0 Pa, what is the volume flow rate of blood in the pulmonary artery? Give your

  67. 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?

  68. psychology

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  69. biology

    what is the comparison of normal and abnormal chroasome (when the abnormal is the alexander disease)

  70. biology

    what is the comparison of normal and abnormal chroasome (when the abnormal is the alexander disease)

  71. Science(Biology)

    Where in the human body is chromasome 17 located ( i mean like is it in the arm, leg, head). If possible, i would also like to know the comparison of normal and abnormal chroasome (when the abnormal is the alexander disease)

  72. 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

  73. Physics

    When physicians diagnose arterial blockages, they quote the reduction in flow rate. If the flow rate in an artery has been reduced to 30% of its normal value due to plaque formation, and the average pressure difference has increased by 40%, by what factor

  74. Science

    Describe the flow of blood in the human body, including through each of the four chambers of the heart. Explain how the blood changes as it moves through various locations in the body. Blood enters the heart through two very large veins, the inferior and

  75. 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

  76. bio

    are blood pressures have differences between genders?explain your answer. -from what i know, women have lower risk to get high blood pressure but for the range of normal blood pressure, i think there is no differences. pls correct me if i wrong and if im

  77. anatomy

    what are the two major branches of the aortic arch in the thoracic cavity? brachiocephalic artery; Is it the left carotid artery or left subclavian artery?

  78. Biology

    Which of the following arteries contributes to the anterior circulation of the brain? anterior inferior cerebellar artery basilar artery anterior cerebral artery vertebral arteries superior cerebellar artery

  79. Medical physics

    1.A hypodermic needle of lenght 0.020m and inner radius 3.0 x10^-4 is used to force water at 20 degree celcious into the air at a flow rate of 1.0 x10^-7m^2 s-1 (a) what is the average velocity in the needle?(assume laminar flow), (b) what is the pressure

  80. Physics

    Neglecting the pressure drop due to resistance, calculate the blood pressure in mmHg in an artery in the brain 32 cm above the heart. The pressure at the heart is 120mmHg and the density of blood is 1.05g/cm3.

  81. ??/

    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)

  82. science

    what is an artery thattakes the oxygen rich blood to the rest of the body from the heart

  83. physics

    1.)Water flows from a 2 cm diameter pipe, at a speed of 0.35m/sec. How long will it take to fill a 10 liter container? 2.)A horizontal segment of pipe tapers from a cross-sectional area of 50 cm^2 to 0.5 cm^2. The pressure at the larger end of the pipe is

  84. physics

    1.) Water flows from a 2 cm diameter pipe, at a speed of 0.35m/sec. How long will it take to fill a 10 liter container? 2.) A horizontal segment of pipe tapers from a cross-sectional area of 50 cm^2 to 0.5 cm^2. The pressure at the larger end of the pipe

  85. physics

    1.)Water flows from a 2 cm diameter pipe, at a speed of 0.35m/sec. How long will it take to fill a 10 liter container? 2.)A horizontal segment of pipe tapers from a cross-sectional area of 50 cm^2 to 0.5 cm^2. The pressure at the larger end of the pipe is

  86. phy

    Doppler ultrasound is used to measure the speed of blood flow. If the speed of the red blood cells is v, the speed of sound in blood is u, the ultrasound source emits waves of frequency f, and we assume that the blood cells are moving directly toward the

  87. Science

    Which identifies strucrures of the human body in order from least complex to most complex levels of organization? A. Human heart-circulatory system-artery- blood vessel B. Nerve cell-brain tissue-brain-nervous system C. Blood vessel-circulatory

  88. Biology

    Which is the correct direction of blood flow? a) right atrium --> right ventricle --> pulmonary artery b) right atrium --> left atrium --> pulmonary artery c) left ventricle --> pulmonary artery --> aorta d) left ventricle --> left atrium --> aorta

  89. Biology!!!!

    Which blood vessel contains blood that has high oxygen concentration, low carbon dioxide concentration, and high pressure? 1. aorta 2. pulmonary artery 3. pulmonary vein 4. vena cava I wrote the answer as 3, but is wrong. Which one is the correct answer?

  90. statistics

    suppose you have a set of blood pressures with a mean of 80 diastolic, and standard deviation of 5 points. assuming a normal distribution of blood pressures what two values should 95% of all blood pressures lie? please show all calculations. thank you very

  91. Physics

    In the human body, blood travels faster in the largest blood vessel, the aorta than in any other blood vessel. Given an average speed of 30 cm/s, how long would it take the blood to travel 5 cm?

  92. General Psychology

    Compare and Contrast normal and abnormal psychology?

  93. anatomy

    How does coronary artery disease affect normal homeostasis of the cardiovascular system

  94. science

    How does coronary artery disease affect normal homeostasis of the cardiovascular system

  95. Anatomy

    How does coronary artery disease affect the normal homeostasis of the cardiovascular system

  96. Biology

    Is it possible for a person to have a normal vital capacity but an abnormal FEV1.0?

  97. problem!

    Atherosclerosis is a condition also called "hardening of the arteries", resulting in reduced elasticity of the arteries. Identify two circulatory problems that might arise from this effect on the vessels. I have no idea Atherosclerosis causes two main

  98. algebra

    10cm2 of a normal specimen of human blood contains 1.2g of hemoglobin how many grams does 47cm3 of the same blood contain

  99. algebra

    10cm2 of a normal specimen of human blood contains 1.2g og hemoglobin how many grams does 47cm3 of the same blood contain

  100. math

    10cm^3 of a normal specimen of human blood contains 1.2g of hemoglobin. How many grams does 47cm^3 of the same blood contain?

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