The term down-regulation refers to the process by which
A. a glandular cell decreases the amount of hormone it secretes.
B. a large amount of hormone shuts down all metabolic activity in a target cell.
C. a cell decreases the number of receptors it has for a hormone.
D. a carrier protein increases the rate of degradation for a hormone and thereby decreases its blood concentration.
E. a carrier protein decreases the rate of degradation of the protein it ferries.
C
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Which statement is correct about terminal ganglia?
a. Those on parasympathetic preganglionic fibers lie in or near the effector organ. b. They give rise to sympathetic postganglionic fibers. c. They are the final common pathway for the autonomic nervous system. d. They contain muscarinic receptors. e. They lie in a chain located along either side of the spinal cord.
For the majority of the GI tract, which layer(s) of the wall contain smooth muscle?
A. Serosa only B. Mucosa and adventitia C. Submucosa and muscularis D. Muscularis only E. Mucosa and muscularis
The clavicle articulates with the scapula
A) distally with the coracoid process. B) distally with the glenoid cavity. C) distally with the acromion. D) distally with the manubrium. E) proximally with the coracoid cavity.
Identify the sciatic nerve in the following figure
A) A B) B C) C D) D