Which of the Following Statements Concerning the Permeability of a Typical

question 9

Multiple Choice

Which of the following statements concerning the permeability of a typical neuron membrane at rest is TRUE?

• A)The permeability to Na⁺ is much greater than the permeability to K⁺.
• B)All of the K⁺ channels in the membrane are open.
• C)The voltage-gated Na⁺ channels are in the inactivated state.
• D)Most of the voltage-gated Na⁺ channels are in the closed state.
• E)There is equal permeability to Na⁺ and K⁺.

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Definitions:

Endogenous

Originating from within an organism, tissue, or cell, used to describe processes or substances that are internally generated.

Naturally Occurring

Referring to substances, phenomena, or processes that exist or happen without human intervention.

Polarized

A term indicating something is divided into two sharply contrasting groups or sets of opinions or beliefs.

Transmitter Substances

are chemical substances, such as neurotransmitters, that transmit nerve impulses across synapses between nerves or from nerves to muscles or organs.