Subscapularis muscle

This video tutorial by Matt from Kenhub covers the subscapularis muscle, a key component of the rotator cuff. It discusses the muscle's origin, insertion, innervation, and function. The subscapularis originates from the subscapular fossa and inserts on the humerus. It is innervated by the subscapular nerve, which is part of the brachial plexus. The rotator cuff stabilizes the shoulder joint, and the subscapularis aids in internal rotation of the humerus. The video encourages interactive learning through Kenhub's resources.

Which muscle group does the subscapularis belong to?

• Quadriceps

• Rotator cuff

• Abdominals

• Hamstrings

Where does the subscapularis muscle originate?

• Coracoid process

• Greater tubercle of the humerus

• Subscapular fossa

• Acromion process

What is the primary nerve supply for the subscapularis muscle?

• Radial nerve

• Axillary nerve

• Median nerve

• Subscapular nerve

What is the main function of the subscapularis muscle?

• Flexion of the elbow

• Internal rotation of the humerus

• Extension of the knee

• External rotation of the humerus

How does the subscapularis muscle contribute to shoulder stability?

• By flexing the shoulder

• By extending the shoulder

• By stabilizing the humeral head in the glenoid cavity

• By abducting the shoulder