Heart rate is controlled by neurons of the cardiovascular center located in the
A) higher centers.
B) pons.
C) medulla oblongata.
D) hypothalamus.
E) thalamus.
Correct Answer:
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Q3: The heart pumps approximately _ liters of
Q110: Blood returning to the heart from the
Q111: In cardiac muscle
A) calcium ions do not
Q112: The pulmonary semilunar valve prevents backward flow
Q113: An increase in the rate of action
Q114: When the left ventricle contracts, the diameter
Q116: Pacemaker cells in the SA node
A) have
Q117: The phase in the cardiac cycle when
Q118: The heart is roughly the size of
A)
Q120: Compared to the right ventricle, the left
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