Muscles A I O Trail guide to the body Week 4

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created 3 years ago by jachang
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updated 3 years ago by jachang
Grade levels:
Graduate school
Subjects:
anatomy
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1

Deltoid

A- -Flex, Medially rotate, Horizontally Adduct, Extend, laterally, Horizontally abduct

O- Lateral 1/3 of clavicle, acromion and spine of scapula

I- Deltoid Tuberosity

2

Trapezius

A- extend, laterally flex, rotate, elevate, upwardly rotate, adduct, stabilize, Depress, Upwardly rotate

O-External occipital protuberance, medial portion of superior nuchal line of occiput, ligamentum nuchae and spinous processes of C-7 through T-12.

I-Lateral 1/3 of clavicle, acromion and spine of the scapula

3

Latissimus Dorsi

A- Extend, adduct, medially rotate
O- Inferior angle of scapula, spinous processes of last 6 thoracic, last 3-4 ribs
I- intertubercular groove of the humerus

4

Teres Major

A- Extend, adduct, medially rotate
O- Inferior angle and lower 1/3 of lateral border of scapula
I- Crest of the lesser tubercle of the humerus

5

Teres minor

A- laterally rotate, adduct, stabilize,
O- upper 2/3 of lateral border of scapula
I- greater tubercle of the humerus

6

Supraspinatus

A-abduct, stabilize
O- Supraspinous fossa of scapula
I- Greater tubercle of the humerus

7

Infraspinatus

A- laterally rotate, adduct, stabilize
O- infraspinous fossa of the scapula
I- greater tubercle of humerus

8

Subscapularis

A-medially rotate, stabilize
O-subscapular fossa of the scapula
I-lesser tubercle of the humerus