A sudden increase in pressure within the carotid sinus leads to
a. increased sympathetic nerve activity
b. increased parasympathetic nerve activity
c. increased cardiac output
d. increased peripheral resistance
e. none of the above
B
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Pressurized ________________________________________ is a means of sterilization
Fill in the blank(s) with correct word
The membrane is more permeable to K+ than to Na+
a. at resting potential. b. during the rising phase of an action potential. c. during the falling phase of an action potential. d. both (a) and (b). e. both (a) and (c).
During coactivation
a. all of the muscle fibers in a skeletal muscle are activated simultaneously. b. the gamma motor-neuron and alpha motor-neuron systems to a skeletal muscle are activated simultaneously. c. all of the cross bridges within a single skeletal muscle are activated simultaneously. d. the primary (annulospiral) and secondary (flower-spray) endings within a muscle spindle are activated simultaneously. e. none of these answers.
The physiologist who contributed much to the study of the autonomic nervous system and coined the expressions "homeostasis" and "fight or flight" is Walter ________.
Fill in the blank(s) with the appropriate word(s).