5 Questions
Which muscle is responsible for internal rotation in the rotator cuff?
Subscapularis
What is the primary function of the rotator cuff muscles as a group?
Stabilization of the humeral head in the glenoid fossa
Which rotator cuff muscle is an external rotator but does NOT share its function with another muscle?
Infraspinatus
Which muscle is both an abductor and an external rotator?
Supraspinatus
Which muscle has the same function as the Infraspinatus?
Teres Minor
Study Notes
Rotator Cuff Muscles
- The "SITS" muscles make up the rotator cuff group:
- Supraspinatus: Abductor and External Rotator
- Infraspinatus: External Rotator
- Teres Minor: External Rotator
- Subscapularis: Internal Rotator
Primary Function
- The primary function of the rotator cuff muscles as a group is to stabilize the humeral head in the glenoid fossa.
Muscle Functions
- Infraspinatus and Teres Minor have similar functions, as indicated by the caption "same functions as infraspinatus".
Identify the rotator cuff muscles and their functions, including abduction, external rotation, and internal rotation. Understand how they work together to stabilize the humeral head in the glenoid fossa.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
