In a Neuron, When Voltage-Gated Na⁺ Channels Have Just Closed

question 27

Multiple Choice

In a neuron, when voltage-gated Na⁺ channels have just closed, which of the following is true?

• A) the membrane is less polarized than at rest
• B) the membrane is more polarized than at rest
• C) the membrane is polarized to the same degree as at rest
• D) the membrane is hyperpolarized
• E) none of the above are true

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Medications taken orally to prevent pregnancy, commonly known as birth control pills.

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A vaginal form of reversible, hormonal birth control. Commonly referred to as NuvaRing.

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Chemicals that are used in various contraceptive methods to kill or immobilize sperm, reducing the chance of pregnancy.

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Medications taken by mouth to prevent pregnancy, containing hormones that inhibit ovulation, alter the cervical mucus, or change the uterine lining.