During ventricular diastole, the bicuspid and tricuspid (mitral) valves are closed.
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Question 2) The primary motor area allows us to consciously move our skeletal muscles.
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Question 3) The average heart beats approximately 75 times each minute at rest.
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Question 4) The withdrawal, or flexor, reflex is one of the only voluntary reflexes.
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Question 5) The QRS wave on an electrocardiogram is representative of ventricular repolarization.
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Question 6) Depolarization of neurons results from the entry of sodium ions into the cell.
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Question 7) The part of the intrinsic conduction system of the heart that directly transmits impulses to the walls of the ventricles is the Purkinje fibers.
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Question 8) A graded potential is to local depolarization as an action potential is to a nerve impulse.
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Question 9) The heart sounds, lub and dup, occur when the atria contract and subsequently when the ventricles contract.
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Question 10) Neurons with two processes, an axon and a dendrite, are known as bipolar neurons.
Indicate whether the statement is true or false
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