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Muscles of the Shoulder Complex Quiz

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Which muscle is primarily responsible for abduction of the shoulder?

Deltoid

Explanation

The deltoid muscle primarily lifts the arm away from the body.

Which muscle stabilizes the head of the humerus in the glenoid cavity?

Supraspinatus

Explanation

Supraspinatus stabilizes the head of the humerus in the shoulder socket.

Which muscle is responsible for the 'shoulder shrug' movement?

Levator scapulae

Explanation

Levator scapulae is responsible for lifting the shoulders, as in a shrug.

Which muscle is commonly referred to as the 'rotator cuff' muscle?

Supraspinatus

Explanation

Supraspinatus is part of the rotator cuff group of muscles.

Which muscle is responsible for adduction of the shoulder?

Pectoralis major

Explanation

Pectoralis major pulls the arm towards the midline of the body.

Which muscle assists in internal rotation of the shoulder?

Teres minor

Explanation

Teres minor aids in rotating the shoulder inward.

What muscle acts as an antagonist to the deltoid during shoulder abduction?

Supraspinatus

Explanation

Supraspinatus opposes the action of the deltoid during shoulder abduction.

Which muscle is responsible for shoulder extension?

Latissimus dorsi

Explanation

Latissimus dorsi extends the shoulder joint.

Which muscle is involved in horizontal abduction of the shoulder?

Serratus anterior

Explanation

Serratus anterior assists in moving the arm away from the midline of the body horizontally.

#10

Which muscle is located deep to the deltoid and assists in shoulder abduction?

Supraspinatus

Explanation

Supraspinatus lies beneath the deltoid and helps in lifting the arm away from the body.

#11

Which muscle contributes to both shoulder and scapular movement?

Trapezius

Explanation

Trapezius plays a role in moving both the shoulder and the scapula.

#12

Which muscle assists in raising the arm above the horizontal plane?

Supraspinatus

Explanation

Supraspinatus helps lift the arm above shoulder level.

#13

Which muscle assists in external rotation of the shoulder?

Infraspinatus

Explanation

Infraspinatus aids in rotating the shoulder outward.

#14

Which muscle assists in stabilizing the shoulder joint during movements?

Trapezius

Explanation

Trapezius aids in stabilizing the shoulder during various arm movements.

#15

Which muscle is involved in stabilizing the humeral head in the glenoid during arm movements?

Subscapularis

Explanation

Subscapularis helps stabilize the upper arm bone in the shoulder socket.

Muscles of the Shoulder Complex Quiz

Which muscle is primarily responsible for abduction of the shoulder?

Which muscle stabilizes the head of the humerus in the glenoid cavity?

Which muscle is responsible for the 'shoulder shrug' movement?

Which muscle is commonly referred to as the 'rotator cuff' muscle?

Which muscle is responsible for adduction of the shoulder?

Which muscle assists in internal rotation of the shoulder?

What muscle acts as an antagonist to the deltoid during shoulder abduction?

Which muscle is responsible for shoulder extension?

Which muscle is involved in horizontal abduction of the shoulder?

Which muscle is located deep to the deltoid and assists in shoulder abduction?

Which muscle contributes to both shoulder and scapular movement?

Which muscle assists in raising the arm above the horizontal plane?

Which muscle assists in external rotation of the shoulder?

Which muscle assists in stabilizing the shoulder joint during movements?

Which muscle is involved in stabilizing the humeral head in the glenoid during arm movements?

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