Manufacturers of some medications used to treat heartburn advertise that their products shut down the acid-producing pumps in the stomach. Where are these "acid-producing pumps"? In other words, which type of gastric gland cell secretes acid?
A. Enteroendocrine cells
B. Surface mucous cells
C. Parietal cells
D. Mucous neck cells
E. Chief cells
Answer: C
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The motor portion of the autonomic nervous system can be divided into
a) somatic and sympathetic divisions. b) somatic and parasympathetic divisions. c) enteric and somatic divisions. d) sympathetic and parasympathetic divisions. e) voluntary and involuntary divisions.
The total refractory period of cardiac muscle _____
A) is about the same as the total refractory period for skeletal muscle B) is shorter than the total refractory period for skeletal muscle C) is longer than the contraction of cardiac muscle D) is longer than the total refractory period for skeletal muscle
This figure shows a frontal section of the kidney. Which number(s) indicate a renal papilla?
A. 2, 7 B. 3 C. 6 D. 9 E. 10
The adrenal medulla produces
A) androgens. B) glucocorticoids. C) mineralocorticoids. D) epinephrine. E) corticosteroids.