Relative to skeletal muscle, smooth muscle
A) only uses less energy to generate a given amount of force.
B) uses less energy to generate a given amount of force and can sustain contractile force without fatigue.
C) only can sustain contractile force without fatigue.
D) only uses calcium from the sarcoplasmic reticulum and extracellular space.
E) uses less energy to generate a given amount of force, can sustain contractile force without fatigue and uses calcium from the sarcoplasmic reticulum and extracellular space.
E) uses less energy to generate a given amount of force, can sustain contractile force without fatigue and uses calcium from the sarcoplasmic reticulum and extracellular space.
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Which of the following is located closest to the rectum?
A. ascending colon B. descending colon C. transverse colon D. sigmoid colon E. cecum
Sensory neurons of the PNS are
A) unipolar. B) bipolar. C) anaxonic. D) multipolar. E) tripolar.
Secretions that affect only nearby cells are termed
A) autocrine. B) endocrine. C) paracrine. D) exocrine.
The two layers of a serous membrane are
A) visceral and parietal. B) internal and external. C) pericardial and parietal. D) double sheets of peritoneum. E) pleural and parietal.