In response to parasympathetic stimulation, ________.

A. heart rate increases
B. the pupils dilate
C. saliva thickens
D. intestinal motility increases


Answer: D

Anatomy & Physiology

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Increased permeability of the postsynaptic cell to Cl- lessens the likelihood that the postsynaptic cell will undergo an action potential

Indicate whether the statement is true or false

Anatomy & Physiology

To initiate a smooth muscle cell contraction, calcium enters the cell and binds to

A. troponin, which then activates myosin light-chain kinase. B. calmodulin, which then binds to and activates myosin light-chain kinase. C. myosin light-chain kinase, which then hydrolyzes ATP. D. a phosphatase, which then removes the tropomyosin blockade. E. a myosin head, which then activates calmodulin.

Anatomy & Physiology

Shortly following DNA replication is a brief

A) G3 phase. B) anaphase. C) G2 phase. D) synthesis phase. E) G1 phase.

Anatomy & Physiology

Which of the following choices most accurately represents the sequence of steps occurring in the contraction cycle? The events numbered 1 through 6 may be used more than once. 1 . Mysoin binds ATP 2 . Mysoin hydrolyzes ATP and goes into cocked position 3 . Myosin releases ADP and inorganic phosphate 4 . Myosin binds actin filament 5 . Power stroke 6 . Myosin releases actin filament

a. 1, 2, 3, 4, 5, 6, 1 b. 1, 2, 4, 3, 5, 1, 6 c. 1, 6, 2, 4, 3, 5, 1, 6 d. 1, 2, 6, 3, 4, 5, 6, 1 e. None of these.

Anatomy & Physiology