EPSPs (Excitatory Postsynaptic Potentials) Occur When

question 61

Multiple Choice

EPSPs (excitatory postsynaptic potentials) occur when

• A) more potassium ions than usual leak out of a cell.
• B) more calcium ions than usual leak out of a cell.
• C) chloride ions enter a cell.
• D) extra sodium ions enter a cell.
• E) hyperpolarizations occur.

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Definitions:

Striated

Having a series of linear marks, grooves, or ridges; often used to describe muscle tissue that appears striped under a microscope.

Cylindrical-Shaped

Describes an object or structure with a straight, round shape that is uniform in diameter throughout its length.

Myelin

An insulating fatty layer that surrounds the nerve fibers, enhancing the speed of electrical impulses in the nervous system.

Impulses

Electrical signals that travel along the neurons, triggering responses such as muscle contractions or gland secretions.