Electrical Wires Are Generally Protected by a Tube of Plastic

question 87

Multiple Choice

Electrical wires are generally protected by a tube of plastic. A similar insulating function is performed in the nervous system by a:

• A) myelin sheath.
• B) glial cell.
• C) terminal button.
• D) synapse.

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Definitions:

Proximal Portion

The part of a limb or structure that is closer to the torso of the body.

Exercise

Physical activity that is planned, structured, and repetitive for the purpose of conditioning any part of the body.

Leg Injury

Any form of harm or damage to the leg, ranging from minor bruises to severe fractures or muscle tears.

Elbow Flexion

The action of bending the elbow joint, decreasing the angle between the forearm and the upper arm.