Axons of sensory neurons synapse with the cell bodies of interneurons in the _____________ of spinal cord gray matter.
A) anterior horn
B) lateral horn
C) posterior horn
D) gray commissure
E) lateral funiculi
Answer: C) posterior horn
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In the ascending limb of the loop of Henle the ________.
A) thin segment is freely permeable to water B) thick segment is permeable to water C) thin segment is not permeable to sodium and chloride D) thick segment moves ions out into interstitial spaces for reabsorption
Epinephrine activates the cyclic AMP pathway in liver cells. In this example, epinephrine is a(n) ________ and cAMP is a(n) ________.
A. enzyme; second messenger B. first messenger; second messenger C. ligand; receptor D. second messenger; ion channel E. first messenger; hydrophobic hormone
The secretion of ________ by nurse cells suppresses FSH release from the anterior pituitary.
Fill in the blank(s) with the appropriate word(s).
Passive smokers have a 30% greater chance of developing lung cancer than do nonsmokers who live in a smoke-free house.
Answer the following statement true (T) or false (F)