1. (7 pts) lon channels are involved with generating action potentials. To the r

Question

1. (7 pts) lon channels are involved with generating action potentials. To the right is an electrical profile of a neuronal action potential. In the boxes below list whether the channels are all open, all closed, opening or closing at each of the letters shown in the profile. (Opening implies that channels were 'all closed' and are moving toward their 'all open' state. BD Closing indicates the opposite. Use the term 'closing' to represent the inactivated state of the Na* channels.) Channel Type CS 1) Leak K' channels Voltage-gated Na* channels Voltage-gated K* channels

Explanation / Answer

CHANNEL TYPE. A. B. C. D. E

Leak K+channels. Open. Closed. Closed. Closed. Open

Voltage gated Na closed. Open. Closed. Closed. Closed

Voltage gated K. Closed. Closed. Closed. Open. Closed

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