Question 3 (1 point) of 10 questions saved Page 1: The rate of healthy, regular

Question

Question 3 (1 point) of 10 questions saved Page 1: The rate of healthy, regular cardiac contraction is determined by Omodification of the SA node rate by neurotransmitters 6 78 910 the SA node O modification of the AV node rate by neurotransmitters O the AV node egend Saved Response Unsaved Response Info Item Save Question 4 (1 point) The plasma membrane Ca2+ channel in contractile cardiomyocytes is NOT used for this. starting membrane depolarization Oleads to Ca2+ release from the sarcoplasmic reticulum O prevents cardiac tetanus Quiz Status Quiz Started prolonging membrane depolarization

Explanation / Answer

Question 3:

The rate of healthy, regular cardiac contraction is determined by SA node.

(b) the SA node.

Question 4:

The plasma membrane calcium channel in contractile cardiomyocytes is not used for

(c) prevents cardiac tetanus.

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