The Prefix Peri- Means

question 32

Multiple Choice

The prefix peri- means:

• A)around.
• B)away from; without.
• C)within.
• D)without; not.

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Definitions:

Neural Impulse

An electrical signal that travels along a neuron's axon, transmitting information throughout the nervous system.

Milliseconds

A unit of time equal to one thousandth of a second, often used to measure very short durations, especially in scientific contexts.

Absolute Refractory Period

A phase during which a neuron is incapable of firing again immediately after an action potential, ensuring the signal only moves in one direction.

Action Potentials

Quick, electrical impulses that travel down a neuron's axon, allowing neurons to communicate with each other.