The statement "Its postganglionic axons always use acetylcholine as the neurotransmitter" is
A) true only for the parasympathetic nervous system.
B) true only for the sympathetic nervous system.
C) true for both the parasympathetic and sympathetic nervous systems.
D) not true for either the parasympathetic or sympathetic nervous systems.
E) true only for the somatic nervous system.
A
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Which of the following statements concerning collagen is false?
A. Collagen is composed of collagen ?-chains. B. Collagen is elastic and stretches. C. There are at least 20 different types of collagen in the body. D. Collagen is strong and flexible. E. Collagen is a common protein in the body.
Which of the following is NOT true of tonus?
A. It is a state of slight muscle contraction. B. During periods of tonus, the motor units take turns contracting. C. It occurs when a muscle is fully contracted. D. It keeps the motor units healthy and ready to contract at any time. E. All of these are true of tonus.
The functional unit of the kidney is a ____________________.
Fill in the blank(s) with the appropriate word(s).
Which accessory gland secrets alkaline fluid to help protect sperm from the acidity of the vagina where the semen will be deposited during intercourse?
A. Both answers are correct. B. Bulbourethral C. Prostate D. None of these answers are correct.