Many visceral smooth muscle networks show rhythmic cycles of activity in the absence of neural stimulation because of __________.
a. pacesetter cells that spontaneously depolarize and trigger contraction of entire muscular sheets
b. the single motor units that contract independently of each other
c. an action potential generated and conducted over the sarcolemma
d. direct contact with motor neurons carrying impulses to the CNS
Answer: a. pacesetter cells that spontaneously depolarize and trigger contraction of entire muscular sheets
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A. a double-layered serous membrane that anchors some of the abdominal organs to the body wall. B. the serous membrane that lines the abdominal and pelvic cavities. C. the space located between the visceral and parietal pleura. D. the serous membrane that covers the lungs. E. the membrane that lines the pericardial sac.
A motor neuron going out to smooth muscles of the stomach will pass through the
A) gray ramus. B) white ramus. C) dorsal ramus. D) ventral ramus. E) All of the answers are correct.
Brucellosis is commonly called ______________ disease
Fill in the blank(s) with correct word
Nutrient absorption occurs primarily in the
A) small intestine. B) large intestine. C) liver. D) stomach and small intestine. E) stomach.