Which of the following is a characteristic of the autonomic nervous system?
A) controls smooth and cardiac muscles
B) uses acetylcholine exclusively
C) voluntary control usually
D) only one nerve fiber from the CNS to effector
Ans: A) controls smooth and cardiac muscles
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Swallowing is initiated when a(n) _____ is voluntarily forced by the tongue to the rear of the mouth and into the pharynx.
a. esophagus b. bolus c. larynx d. duodenum e. none of the above
Carbohydrate digestion begins in the ________, whereas protein digestion begins in the ________
A) mouth; stomach B) stomach; small intestine C) liver; small intestine D) small intestine; stomach E) mouth; small intestine
Which term means the back of the body or body part?
A. Cephalad B. Proximal C. Dorsal D. External E. Prone
Sensory receptors
A. send signals from the brain to muscles. B. act as an intermediate within the CNS between the ascending and descending tracts. C. work with muscles to generate motion. D. detect changes in and outside the body.