Share on Pinterest Four muscles make up the rotator cuff: the subscapularis, teres minor, supraspinatus, and infraspinatus. Together they assist in stabilizing the shoulder joint as well as in performing various arm movements. Four muscles and their attached tendons make up the rotator cuff.
What are the 4 rotator cuff muscles and what motions does each do?
Stabilizing the head of the humerus in the shoulder joint: The supraspinatus, infraspinatus, teres minor, and subscapularis muscles all work together to achieve this. Abducting or elevating the shoulder joint out to the side: These motions are performed by the supraspinatus.
What are the rotator cuff muscles What are the functions of the rotator cuff?
As a group, the rotator cuff muscles are responsible for stabilizing the shoulder joint, by providing the “fine tuning” movements of the head of the humerus within the glenoid fossa. They are deeper muscles and are very active in the neuromuscular control of the shoulder complex during upper extremity movements.
What is the rotator cuff muscles?
The rotator cuff is a group of muscles and tendons that surround the shoulder joint, keeping the head of your upper arm bone firmly within the shallow socket of the shoulder. A rotator cuff injury can cause a dull ache in the shoulder, which often worsens with use of the arm away from the body.
What are the four rotator cuff muscles quizlet?
Terms in this set (4)
- Supraspinatus. A relatively small muscle of the upper back that runs from the supraspinatous fossa superior of the scapula (shoulder blade) to the greater tubercle of the humerus.
- Infraspinatus.
- Teres Minor.
- Subscapularis.
Where are the rotator cuff muscles?
The rotator cuff is a group of muscles and tendons that surround the shoulder joint, keeping the head of your upper arm bone firmly within the shallow socket of the shoulder.
What are the muscles in the shoulder called?
The primary muscle group that supports the shoulder joint is the rotator cuff muscles. The four rotator cuff muscles are the supraspinatus, infraspinatus, teres minor, and subscapularis. Together the rotator cuff muscles form a musculotendinous cuff as they insert on the proximal humerus.
What are the four muscles of the rotator cuff and their functions quizlet?
Terms in this set (6)
- Supraspinatus. FUNCTION: Shoulder Abduction (w/the middle deltoid)
- Infraspinatus. FUNCTION: External Rotation.
- Teres Minor. FUNCTION: External Rotation.
- Subscapularis. FUNCTION: Internal Rotation.
- Kinesiology of the Shoulder Complex (during shoulder elevation)
- Rotator Cuff Info.
What are all the rotator cuff muscles?
Each one of these muscles is part of the rotator cuff and plays an important role:
- Supraspinatus. This holds your humerus in place and keeps your upper arm stable.
- Infraspinatus. This is the main muscle that lets you rotate and extend your shoulder.
- Teres Minor. This is the smallest rotator cuff muscle.
- Subscapularis.
