Science Check Please Dr.Bob222

I am sorry would..Hopefully this would make it easier
1. Your ____ is your first line of defense against pathogens.
large intestine
skin *

2. Blood vessels help regulate your body's temperature. When it's cold, your blood vessels ____ to
decrease blood flow and retain heat.
cool down

3. The main function of the muscle is to _____.
digest food
move bones and body parts
regulate body temperature
support the body*

4. The ____ muscle contracts about 70 times per minute.
cardiac *
none of the above

5. Red blood cells are produced in _____ in the bone.
red marrow *
yellow marrow

6. The skeletal system has several functions including _______.
protecting the body from bacteria
moving limbs
producing blood cells *
sending messages to the brain

7. Reflex responses are controlled in your _____, which allows your body to respond without
brain; hesitation
muscles; moving
receptors; delay
spinal cord; thinking *

8. Olfactory cells located in your nasal passages link your sense of ________ with your sense of
hearing; smell
smell; taste *
touch; taste
vision; hearing

9. _______ is a depressant that _____ the nervous system.
Alcohol; slows down
Chocolate; speeds up
Chocolate; slows down*
Soda; speeds up
10. A(n) ________ moves from one neuron to another by crossing a small space called a _______.

impulse; synapse *
axon; dendrite
signal; receptor
synapse; sensory gap

11. Which of the following is NOT true about impulse transfer?
Impulses move in all directions. *
Axons carry impulses away from the cell body.
Dendrites carry impulses to the cell body.
Impulse move across synapses using chemicals.

12. The ________ system of the peripheral nervous system would have control over ___________.

somatic; impulses
autonomic; heart rate *
central; salivary glands
somatic; digestion

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asked by YOLO
  1. Please

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    posted by YOLO
  2. Yes, it does help. Remember that I'm not a biologist and I don't know all of these answers.
    1 and 2 are right. I lean to a different answer for 3 although one function certainly is to support the body. I just don't know if that is the main function. 4 and 5 are right; your answer for 6 certainly is true but what about moving limbs so mark me as being unsure about 6.
    I agree with 7 and 8; I don't agree with 9. Chocolate contains caffeine and if anything caffeine will speed up and not depress; certainly it is not a depressant.
    I agree with 10. I don't have the foggiest about 11 and 12.

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    posted by DrBob222

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