What do the cavities of the neural tube become in the adult brain?
A. Ventricles
B. Coelom
C. Auricles
D. Subarachnoid space
Answer: A
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Which of the following structures are clusters of receptor cells and supporting cells on the tongue that detect taste sensation?
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The rate with which an action potential travels along an axon _______
A) is called the conduction velocity B) is measured in volts/sec C) is measured in meters/sec D) is called the conduction velocity and is measured in volts/sec E) is called the conduction velocity and is measured in meters/sec
The accessory nerve
A. has fibers that join the vagus nerve. B. has both a cranial and a spinal component. C. provides innervation to the trapezius and sternocleidomastoid muscles. D. is cranial nerve XI. E. All of these choices are correct.
If a person stands up suddenly from the prone (lying) position they may feel a sudden dizzy or lightheadedness. Which of the following is the least likely physiological response to this situation?
A) increased sympathetic output to the heart B) faster heart rate and greater heart contractility C) increased parasympathetic nerve impulses to the heart D) increasing peripheral resistance due to vasoconstriction