A 3- X 2-In

question 9

Multiple Choice

A 3- x 2-in. device box, 2.5 in. deep, has a volume of ____ cubic inches.

• A) 6.5
• B) 9.5
• C) 12.5
• D) 24

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Definitions:

Cell Membrane

A biological membrane that separates the interior of all cells from the outside environment, controlling the movement of substances in and out of cells.

All-or-None Law

A principle stating that certain physiological responses will occur to their fullest extent once a stimulus reaches a threshold, without gradation in response.

Action Potential

A sudden and temporary electrical charge that sweeps through a neuron, allowing it to transmit a signal along the nerve pathway.

Neuron Fires

The process by which a neuron sends an electrical signal down its axon, transmitting information to other neurons, muscles, or glands.