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A&P II EXAM 1 MULTIPLE CHOICE
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A&P II EXAM 1 MULTIPLE CHOICE
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A&P II EXAM 1 MULTIPLE CHOICEA differentiating red blood cell would normally:
a.) lose its nucleus after getting into circulation
b.) begin accumulating hemoglobin while still a stem cell
c.) change its shape before getting into circulation
d.) all of the above - answer- c.) change its shape before getting into circulation
Which of the following sites will old platelets be stored temporarily as a reserve against
a major blood loss event?
a.) bone marrow
b.) liver
c.) spleen
d.) pituitary - answer- c.) spleen
The involuntary cardiac centers in the human brain are located in the:
a.) cerebrum
b.) cerebellum
c.) medulla
d.) pons - answer- c.) medulla
The greatest total cross sectional area of the blood vessels in the body are in:
a.) small arteries
b.) capillaries
c.) veins
d.) large arteries - answer- b.) capillaries
The net movement of water out of the blood and across the capillary wall is
compensated for by which of the following active systems?
a.) circulatory
b.) lymphatic
c.) pulmonary
d.) none of the above - answer- b.) lymphatic
Capillaries involved in a body area undergoing edema (swelling), one would expect the
cause to be:
a.) increased water flow out of the blood
b.) increased water into the blood
c.) an effect of dehydration
d.) an effect of low blood pressure - answer- a.) increased water flow out of the blood
Which of the following is true considering heart muscles?
a.) it can enter tetanus but not summation
b.) it can use anaerobic energy
c.) it can use triglycerides for energy
, d.) the contraction relaxation cycle is shorter than in skeletal muscles - answer- c.) it can
use triglycerides for energy
The hepatic portal vein collects blood from the:
a.) stomach and intestines
b.) lung
c.) liver
d.) pituitary - answer- a.) stomach and intestines
A very fast heart rate that results in poor cardiac output is called:
a.) bradycardia
b.) congestive heart failure
c.) primary block
d.) tachycardia - answer- d.) tachycardia
Cardiac Action Potential Diagram
The area of the curve descending downwards (green graph at 3) is described as:
a.) depolarization
b.) plateau
c.) repolarization
d.) threshold - answer- c.) repolarization
Cardiac Action Potential Diagram
The area of the curve labelled #2 (plateau) is where:
a.) Na ion gates are open and K ion gates are closed
b.) Na gates are closed and K gates are closed
c.) Ca ion inflow equals K ion outflow from the cell
d.) K ion gates are open and the ion is flowing into the cell - answer- c.) Ca ion inflow
equals K ion outflow from the cell
If blood pressure drops and osmotic pressure of the blood rises, this could be due to:
a.) dehydration
b.) blood loss
c.) edema (swelling)
d.) homeostasis - answer- a.) dehydration
The body reacts to changes in blood gas levels by changing cardiac output and blood
flow patterns. What type of receptors send information so that the body can react to
changing blood CO2 levels?
a.) baroreceptors
b.) chemoreceptors
c.) proprioreceptors
d.) none of the above - answer- b.) chemoreceptors
Which of the following decrease the rate of the heart beating?
a.) increased blood volume returning to the heart
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