In the small intestine, smooth muscle is arranged in two layers: an outer longitudinal layer and an inner ____ layer
a. transverse
b. circular
c. sagittal
d. rectus
a
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Which of the following organs or structures would be found in the left iliac region?
A) liver B) appendix C) intestines D) stomach
I f channels are permeable to
A) Ca2+ and K+ B) Na+only C) Ca2+ only D) Na+ and K+ E) K+ only
Sympathetic activation leads to
A) relaxation in skeletal muscle of bronchioles, causing bronchodilation. B) contraction of smooth muscles of bronchioles, causing bronchoconstriction. C) relaxation in smooth muscles of bronchioles, causing bronchodilation. D) relaxation of smooth muscles of bronchioles, resulting in bronchoconstriction. E) contraction of smooth muscles of bronchioles, causing bronchodilation.
Sensory adaptation refers to
a. the ability of receptors to become less responsive to a stimulus of a given intensity. b. a phenomenon through which a receptor specialized for one sensory modality evolves to respond to another sensory modality. c. the ability of receptors to become more sensitive to a stimulus as a consequence of repeated exposure. d. none of these.