During excitation-contraction coupling,
a. the action potential travels down the T tubules
b. Ca2+ is released from the sarcoplasmic reticulum
c. Ca2+ is taken up by the sarcoplasmic reticulum
d. both a and b occur
e. both a and c occur
D
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The pathology report revealed that the dog had a/an ______________, a tumor composed of immature, undifferentiated cells
Fill in the blank(s) with correct word
Venous return would be increased by:
A. loss of venous valves B. decreased respiratory rate C. increased skeletal muscle activity D. dilation of the veins
The sodium chloride molecule breaks apart in water. What does "C" represent?
A. Sodium ion B. Water molecule C. Chloride ion D. Salt crystal E. Dissociation
Increased pressure in the aortic arch will activate the aortic arch reflex and cause
A. increased parasympathetic stimulation of the heart. B. vasoconstriction of peripheral vessels increasing the blood pressure. C. increased ADH secretion. D. a decrease in the frequency of action potentials from the aortic baroreceptors. E. increased sympathetic stimulation of the heart.