The Spinal Cord Consists of Five Regions and ________ Segments

question 26

Multiple Choice

The spinal cord consists of five regions and ________ segments.

• A)5
• B)12
• C)25
• D)31
• E)The number varies widely among individuals.

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Definitions:

Coracobrachialis

A muscle in the shoulder that flexes and adducts the arm.

Pectoralis Minor

A thin, triangular muscle located beneath the pectoralis major in the chest, which aids in the movement of the shoulder.

Pectoralis Major

The pectoralis major is a large chest muscle that functions to flex, adduct, and internally rotate the humerus at the shoulder joint.

Serratus Anterior

A muscle on the side of the chest that assists in the upward movement of the arms and stabilizes the scapula.