Microscopic vessels that lie between arterioles and venules and function for exchange of materials (nutrients, gases, wastes) between the blood and body tissues are:
A) elastic arteries
B) muscular arteries
C) arterioles
D) capillaries
Answer: D) capillaries
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Hormone replacement therapy may be used to treat which of the following?
A. Target cell increased sensitivity B. Aging C. An increased number of receptors for a specific hormone D. Hypersecretion of a hormone E. Hyposecretion of a hormone
DiGeorge syndrome is a chromosomal disorder in which the thymus never develops/barely develops due to a deletion in a chromosome. Which of the following complications would you expect a child with DiGeorge syndrome to encounter?
A. The child will possess very few T lymphocytes and will be immunocompromised. B. The child will lose flow of lymph through the body, so recurrent edema will result. C. The child will not possess any B lymphocytes and will be immunocompromised. D. The space in which body fluid is filtered and pathogens are destroyed will be missing, so the child will be prone to life-threatening infections.
A postsynaptic potential is a graded potential that is the result of a neurotransmitter released into the synapse between two neurons
Indicate whether the statement is true or false
The cyclical process of contracting and relaxing of the precapillary sphincters is called ________.
Fill in the blank(s) with the appropriate word(s).