Drugs known as calcium channel blockers such as nifedipine can be used to
A) decrease the force of cardiac contraction.
B) increase blood pressure.
C) increase the rate of cardiac contraction.
D) increase the force of contractions.
E) decrease afterload.
Answer: A
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Sequence the following events correctly
1 . Neurotransmitter diffuses across cleft. 2 . Calcium induces exocytosis of neurotransmitter. 3 . Permeability of postsynaptic membrane altered. 4 . Ion channels open. 5 . Neurotransmitter binds to receptor. a. 1, 2, 3, 5, 4 b. 1, 4, 3, 2, 5 c. 2, 1, 5, 4, 3 d. 3, 1, 4, 5, 2 e. 5, 4, 3, 1, 2
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