If plasma volume is decreased by hemorrhage
a. baroreceptors in the aortic arch sense the pressure change.
b. cardiac output increases.
c. total peripheral resistance increases
d. a reflex response is initiated.
e. all of these.
E
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Which of the following line the ventricles of the brain?
A. Schwann cells B. Satellite cells C. Astrocytes D. Oligodendrocytes E. Ependymal cells
The following steps occur in rods when they are excited by a photon of light. Place them in the correct sequence.
1. Membrane sodium channels close. 2. cGMP is broken down. 3. The membrane hyperpolarizes and the rate of neurotransmitter release declines. 4. Transducin is activated. 5. Opsin is activated. A) 1, 3, 4, 5, 2 B) 3, 5, 2, 1, 4 C) 5, 4, 2, 1, 3 D) 1, 5, 2, 4, 3 E) 4, 5, 2, 1, 3
________ is an increase in blood flow that accompanies an increase in metabolic activity.
Fill in the blank(s) with the appropriate word(s).
Identify two major divisions of the ANS
A) somatic division and sympathetic division B) somatic division and parasympathetic division C) enteric division and the central division D) central division and sympathetic division E) sympathetic division and parasympathetic division