The Pectoralis Major ________

question 19

Multiple Choice

The pectoralis major ________.

• A) acts as an agonist in flexion, adduction, and medial rotation at the shoulder
• B) is the prime mover in abduction, flexion, extension, and medial and lateral rotation at the shoulder
• C) rotates the scapula
• D) acts as an agonist in depression and protraction of the shoulder

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Definitions:

Marginal Cost Curve

A graphical representation showing how the cost to produce one additional unit of a good changes as production increases.

Average Total Cost (ATC)

The total cost of production (fixed and variable costs) divided by the total quantity of output produced.

Marginal Cost (MC)

Marginal cost is the increase in total cost that arises from producing one additional unit of a product or service.

Marginal Revenue (MR)

The enhanced earnings from distributing an additional unit of a good or service.