Shoulder, Arm, Back Muscle Review

Front

What is the function of the teres minor muscle?

Back

The teres minor muscle is responsible for the external rotation of the arm and stabilization of the shoulder joint.

Front

Where is the latissimus dorsi muscle located?

Back

The latissimus dorsi muscle is located in the lower back and extends to the sides, helping in the movement of the shoulder.

Front

What are the primary actions of the triceps brachii muscle?

Back

The triceps brachii muscle primarily extends the elbow and assists in shoulder extension.

Front

What role does the infraspinatus muscle play in shoulder movement?

Back

The infraspinatus muscle is primarily responsible for external rotation of the shoulder and stabilization of the shoulder joint.

Front

What is the function of the rhomboids muscles?

Back

The rhomboids muscles retract the scapula, helping to pull the shoulder blades together.

Front

What are the three heads of the triceps brachii muscle?

Back

The three heads of the triceps brachii muscle are the long head, lateral head, and medial head.

Front

What is the origin of the latissimus dorsi muscle?

Back

The latissimus dorsi muscle originates from the spinous processes of the lower six thoracic vertebrae, lumbar vertebrae, and the iliac crest.

Front

How does the teres minor muscle contribute to shoulder stability?

Back

The teres minor muscle helps stabilize the shoulder joint by maintaining the position of the humeral head within the glenoid cavity.

Front

What is the innervation of the infraspinatus muscle?

Back

The infraspinatus muscle is innervated by the suprascapular nerve.

Front

What movements are facilitated by the rhomboids?

Back

The rhomboids facilitate scapular retraction, elevation, and downward rotation.