Professor Michaels Is Explaining to His Students That, When the Neuron

question 31

Multiple Choice

 Professor Michaels is explaining to his students that, when the neuron is at rest, ______ is mostly responsible for the movement of potassium ions out of the cell.

• A) potassium's electrical gradient
• B) potassium's concentration gradient
• C) the sodium-potassium pump
• D) sodium's electrical gradient

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Definitions:

Menarche

is the onset of menstruation in a girl, marking the beginning of reproductive capability.

Menstrual Period

The phase in a female's menstrual cycle where bleeding occurs from the uterus, signaling no pregnancy.

Secondary Sex Characteristics

Physical features that distinguish the sexes of a species but are not directly involved in reproduction, such as breast development in females and facial hair in males.

Klinefelter Syndrome

A genetic condition in males characterized by the presence of an extra X chromosome, leading to symptoms such as reduced masculinity, infertility, and sometimes cognitive impairments.