What is the origin of the pectoralis minor?

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Prepare for the NHI Eastern Kinesiology Test with our comprehensive quiz. Utilize flashcards and multiple-choice questions, complete with hints and detailed explanations. Ready yourself for success!

Multiple Choice

What is the origin of the pectoralis minor?

Explanation:
Pectoralis minor attaches to the anterior surfaces of the third, fourth, and fifth ribs near their costal cartilages and inserts on the coracoid process of the scapula. This placement lets the muscle pull the scapula forward and downward, helping to stabilize the shoulder girdle. Among the given choices, the third through fifth ribs best match the muscle’s known origin, whereas origins from the first through third, second through fourth, or sixth through eighth ribs would place the attachment in different regions that don’t correspond to this muscle. So, the origin is the third through the fifth ribs.

Pectoralis minor attaches to the anterior surfaces of the third, fourth, and fifth ribs near their costal cartilages and inserts on the coracoid process of the scapula. This placement lets the muscle pull the scapula forward and downward, helping to stabilize the shoulder girdle. Among the given choices, the third through fifth ribs best match the muscle’s known origin, whereas origins from the first through third, second through fourth, or sixth through eighth ribs would place the attachment in different regions that don’t correspond to this muscle. So, the origin is the third through the fifth ribs.

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