What is the name of the vesicle at the tip of a sperm cell that contains enzymes that will help the sperm cell penetrate an egg cell it encounters?
A) scrotum
B) amnion
C) chorion
D) Sertoli cell
E) acrosome
Answer: E) acrosome
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You are studying the role of a newly discovered neurotransmitter. You find that there are receptors for this neurotransmitter on interneurons in the brain and that when it binds, it causes the opening of K+ channels. What can we expect of the postsynaptic cells under influence of this neurostransmitter?
A. There will be no change to the membrane potential in the postsynaptic cell. B. The postsynaptic cell will undergo an IPSP. C. The postsynaptic cell will undergo an EPSP. D. The postsynaptic cell will immediately undergo an action potential.
The cerebellum communicates with other regions of the CNS through the
A) flocculonodular lobe. B) cerebellar peduncles. C) vermis. D) lateral hemispheres. E) folia.
The triceps brachii and the biceps brachii ________.
A. are synergistic for each other B. both have their origin in the forearm C. are antagonist to each other D. both have their insertions in the shoulder
The interstitial fluid refers to
A. the fluid between the cells. B. the fluid between the cells and the fluid within the cells. C. the plasma and fluid between the cells. D. the plasma. E. the fluid within the cells.