147k views
3 votes
The steep repolarization to rest potential phase of the action potentials of myocardial contractile cells occurs when conductance to which ion(s) decrease?

1) Ca
2) K
3) Na
4) A and B
5) A and C

User Andreoss
by
7.8k points

1 Answer

4 votes

Final answer:

The steep repolarization to rest potential phase of the action potentials of myocardial contractile cells occurs when conductance to K+ ions decrease.

Step-by-step explanation:

The steep repolarization to rest potential phase of the action potentials of myocardial contractile cells occurs when conductance to K+ ions decrease. During repolarization, the K+ channels open, allowing K+ ions to exit the cell. This movement of K+ ions helps bring the membrane potential back to its resting state.

User Arsibalt
by
8.6k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.