The Somatic Nervous System Can Alter the Activities of Its

question 17

Multiple Choice

The somatic nervous system can alter the activities of its targets, the skeletal muscle fibers, because

• A) it is electrically coupled by gap junctions to the muscles.
• B) its signals bind to receptor proteins on the muscles.
• C) its signals reach the muscles via the blood.
• D) its light pulses activate contraction in the muscles.
• E) it is connected to the internal neural network of the muscles.

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Definitions:

Trapezium

A bone in the wrist located below the base of the thumb, part of the carpals.

Phalanges

The bones of the fingers and toes in the human body.

Antebrachium

Refers to the forearm, the region of the arm between the elbow and the wrist.

Radius

One of the two large bones of the forearm, positioned on the lateral side (thumb side) of the forearm.