Arteries carry blood toward the heart, while veins carry blood away from the heart
Indicate whether this statement is true or false.
FALSE
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Answer the following statements true (T) or false (F)
1. The gray rami communicantes consist of myelinated postganglionic fibers. 2. Splanchnic nerves are mixed motor and sensory nerves. 3. The autonomic nervous system may cause activation or inhibition, depending on the division that is active and the target that is affected. 4. The celiac ganglion is primarily associated with the sympathetic division. 5. The sympathetic chain is composed of collateral ganglia.
Epinephrine
a. is secreted by the adrenal medulla b. is secreted along with norepinephrine c. reinforces sympathetic nervous system activity d. mobilizes energy reserves e. has all of the above characteristics
During internal respiration, the exchange of the respiratory gases takes place between which of the following?
a. the pulmonary capillaries and the interstitial fluid that surrounds the cells b. the pulmonary capillaries and air within the alveoli c. the systemic capillaries and the interstitial fluid that surrounds the cells d. all of the listed responses are correct
The frequency of action potentials generated by the SA node is:
A. increased by parasympathetic stimulation. B. decreased by sympathetic stimulation. C. increased by acetylcholine. D. increased by epinephrine. E. increased by an increase in blood pressure.