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Human Anatomy
Muscles (Rotator Cuff Region)
32
Anatomy
Undergraduate 4
01/30/2008
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Term
Supraspinatus: Origin
 Definition
supraspinnous fossa
Term
Supraspinatus: Insertion
 Definition
greater tubercle of humerus
Term
Supraspinatus: Nerve
 Definition
suprascapular
Term
Supraspinatus: Action
 Definition
abducts arm (reach to back of the head)
Term
Infraspinatus: Origin
 Definition
infraspinuous fossa
Term
Infraspinatus: Insertion
 Definition
greater tubercle of humerus
Term
Infraspinatus: Nerve
 Definition
suprascapular
Term
Infraspinatus: Action
 Definition
extends and laterally rotates arm
Term
Teres Minor: Origin
 Definition
middle 1/3 of lateral border of scapula
Term
Teres Minor: Insertion
 Definition
greater tubercle of humerus
Term
Teres Minor: Nerve
 Definition
axillary
Term
Teres Minor: Action
 Definition
adducts and extends and laterally rotates arm
Term
Subscapularis: Origin
 Definition
subscapular fossa
Term
Subscapularis: Insertion
 Definition
lesser tubercle of humerus
Term
Subscapularis: Nerve
 Definition
subscapular
Term
Subscapularis: Action
 Definition
rotates arm medially
Term
Latissimus Dorsi: Origin
 Definition
spinous processes (T7-12) (L1-5)

median ridge of sacrum median ridge of sacrum

iliac crest of hip
Term
Latissimus Dorsi: Insertion
 Definition
crest of lesser tubercle
Term
Latissimus Dorsi: Nerve
 Definition
Thoracodorsal
Term
Latissimus Dorsi: Action
 Definition
adducts, extends, medially rotates arm
Term
Teres Major: Origin
 Definition
inferior 1/3 of lateral border of scapula
Term
Teres Major: Insertion
 Definition
lesser tubercle crest
Term
Teres Major: Nerve
 Definition
lower subscapular
Term
Teres Major: Action
 Definition
adducts, extends, medially rotates arm
Term
Deltoid: Origin
 Definition
lateral clavicle, acromian process, spine
Term
Deltoid: Insertion
 Definition
deltoid tuberosity
Term
Deltoid: nerve
 Definition
axillary
Term
Deltoid: Action
 Definition
abduct, flex, extend, rotate arm
Term
Coracobrachialis: Origin
 Definition
coracoid process
Term
Coracobrachialis: Insertion
 Definition
humerus-mid medial border
Term
Coracobrachialis: Nerve
 Definition
musclocutaneous
Term
Coracobrachialis: Action
 Definition
adducts and flexes arm
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