Which of the following is responsible for peristalsis?
A. Pharyngeal constrictors
B. Muscularis mucosae
C. Muscularis externa
D. Gastric rugae
E. Mesothelium
Answer: C
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List 3 benefits of the American Association for Laboratory Animal Science (AALAS)
What will be an ideal response?
When a blood capillary is cut, a clot forms under which influence?
a. negative feedback. b. positive feedback. c. extrinsic control. d. both (a) and (b) above. e. none of these answers.
What type of cell junction would most likely prevent water from flowing between our cells?
A) tight junctions B) glycoproteins C) desmosomes D) gap junctions
The speed of contraction of skeletal muscle is related to:
A. the oxidative capacity of the skeletal muscle fiber B. the myosin ATPase activity of the skeletal muscle fiber C. the level of ?-adrenergic stimulation D. the rate of Ca++ extrusion from the skeletal muscle fiber E. the level of myosin light-chain phosphorylation within the muscle fiber