The esophagus
A. contains both smooth and skeletal muscle fibers.
B. opens to the stomach at the pyloric sphincter.
C. secretes digestive enzymes from its mucosa.
D. is located anterior to the trachea.
E. is lined with pseudostratified ciliated columnar epithelium.
Answer: A
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a. somatic. b. proprioceptive. c. somethetic. d. a special sense. e. visceral.
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What will be an ideal response?
Which of the following describes a depolarization?
A) The membrane becomes less polarized. B) The membrane potential becomes more polarized. C) The membrane, which was formerly not polarized, now is polarized. D) The membrane potential becomes more negative.
Which of the following combining forms means chest?
A. phren/o B. thorac/o C. spir/o D. trache/o