Sympathetic postganglionic fibers are longer than parasympathetic postganglionic fibers
Indicate whether the statement is true or false
T
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Proteins are digested into ________.
Fill in the blank(s) with the appropriate word(s).
Nadh
a. is an energy carrier. b. plays a role in cellular respiration. c. is utilized in glycolysis. d. is utilized in the citric acid cycle. e. all of these answers.
What physiological process occurs in the structure labeled "7"?
A) release of neurotransmitter
B) conduction of the action potential into the cell interior
C) activity of acetylcholinesterase
D) release of protein and calcium ions into the muscle fiber
E) opening of sodium channels and subsequent influx of sodium
Which of the following is a function of the heart skeleton?
A. Provides electrical insulation between the atria and ventricles. B. Supplies support and reinforcement for the valves. C. Provides a rigid site for cardiac muscle attachment. D. All of the choices are functions of the heart skeleton.