Anatomy Quiz 2

For the above muscle (subscapularis), identify the following: Action: Origin: Insertion: Nerve Innvervation: Nerve and nerve roots

Action: medially rotate and stabilization of humeral head Origin: subscapular fossa Insertion: Lesser tubercle of the humerus Nerve: upper and lower subscapular Nerve roots: C 5, 6, 7

All four rotator cuff muscles insert on which bone?

Humerus

The scapula contains 3 depressions, also known as fossae. What are the names of the three fossae?

Infraspinous, Supraspinous, and Subscapular

Identify the innervation of the muscle below:

Nerve: Suprascapular Nerve Root: C 4, 5, 6

Which of the rotator cuff muscle is not involved in shoulder rotation?

Supraspinatus

Name two rotator cuff muscles that perform shoulder (glenohumeral joint) ADDuction:

Teres minor and infraspinatus

Identify the bony landmark in the picture below

spine of the scapula or scapular spine

What is the primary function (not muscle action) of the rotator cuff muscle?

stabilization of the glenohumeral joint

Identify the muscle below:

subscapularis

The rotator cuff is made up of the following muscles:

supraspinatus, infraspinatus, Teres minor, subscapularis