Multiple Choice
Which is true when your sympathetic nervous system is more active?
A) The SA node depolarizes more rapidly.
B) The myocardium repolarizes more frequently during one minute.
C) More Ca₂₊ becomes available and causes more forceful heart contractions.
D) Norepinephrine is stimulating the heart.
E) All of the above are true.
Correct Answer:
Verified
Correct Answer:
Verified
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