What are the two determinants of cardiac output?
a. size of the ventricles and stroke volume
b. size of the heart and blood pressure
c. blood pressure and heart size
d. heart rate and ventricular volume
e. heart rate and stroke volume
e
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All cells are capable of reproducing
Indicate whether the statement is true or false
When the right atrium contracts, the ________.
A. right ventricle always contracts simultaneously B. left atrium and left ventricle always relax simultaneously C. left atrium always contracts simultaneously D. left atrium always relaxes simultaneously
The parasympathetic neurons of the autonomic nervous system decrease the rate at which the pacemaker cells of the sinoatrial node drive the heart rate by secreting the neurotransmitter ________.
Fill in the blank(s) with the appropriate word(s).
The sacs within each Golgi stack are in close physical contact with each other
a. True b. False Indicate whether the statement is true or false