Terminal cisterns ________
A) are made of smooth endoplasmic reticulum
B) are an important link between the nervous system and the muscle cell
C) store acetylcholine
D) carry the action potential deep into the muscle cell
Answer: A
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The beginning of the cardiac cycle is when the
A. ventricles fill with blood. B. two semilunar valves close. C. atria contract. D. atria fill with blood. E. ventricles contract.
The correct sequence of parts that carry cardiac impulses is
A. AV node, AV bundle, Purkinje fibers, SA node. B. SA node, AV node, AV bundle, Purkinje fibers. C. SA node, Purkinje fibers, AV node, AV bundle. D. AV node, SA node, Purkinje fibers, AV bundle.
The skeletal system does not:
a. provide a rigid framework of support b. produce blood cells c. produce vitamin D d. serve as a storage place for minerals
In a hypotonic solution, a cell would be in danger of bursting
1.True 2.False