Shoulder

Question 1

Trapezius Origin & Insertion

Answer 1

O=Occipital Bone, Ligamentum Nuchae, SP’s C4-T12

I=Lateral Clavicle, Acromion, & Scapular Spine

Question 2

Trap Action

Answer 2

Upper=Elevate & Downwardly Rotate the Scapula

Mid=Scapular Retraction & Stabilization

Lower=Depress & Upwardly Rotate the Scapula

Question 3

Lats Origin & Insertion

Answer 3

O=SP’s T7-12, Ribs 8-12, Inferior Angle of Scapula, Thoracolumbar Fascia, & Posterior Iliac Crest

I=Intertubercular Groove

Question 4

Lats Action

Answer 4

Extend, Adduct, & IR the shoulder

Question 5

Levator Scap Origin & Insertion

Answer 5

O=TP’s of C1-C4

I=Medial border of the scapula in between the Superior Angle & Scapular Spine

Question 6

Levator Scap Action

Answer 6

Elevate & Downwardly Rotate the Scapula

Question 7

Rhomboid Minor Origin & Insertion

Answer 7

O=SP’s of C7-T1

I=Upper portion of medial border of scap across from the scapular spine

Question 8

Rhomboid Major Origin & Insertion

Answer 8

O=SP’s of T2-T5

I=Medial border of scap in between the scapular spine & inferior angle

Question 9

Rhomboids Action

Answer 9

Retract, Elevate, & Downwardly Rotate the Scapula

Question 10

Pec Major Origin & Insertion

Answer 10

O=Medial Clavicle, Sternum, & Cartilages of Ribs 1-6

I=Crest of Greater Tubercle

Question 11

Pec Major Action

Answer 11

Adduction & IR Shoulder; Also elevates thorax during forced inhalation

UF=Horizontal Adduction & Shoulder Flexion

LF=Shoulder Extension

Question 12

Pec Minor Origin & Insertion

Answer 12

O=Ribs 3-5

I=Coracoid Process

Question 13

Pec Minor Action

Answer 13

Depress, Abduct, & Downwardly Rotate Scapula

Elevates thorax during forced inhalation when the ribs are fixed

Question 14

Serratus Anterior Origin & Insertion

Answer 14

O=Ribs 1-9

I=Medial Border of Scap (Anterior Surface)

Question 15

Serratus Anteior Action

Answer 15

Holds Medial border of scapula against rib cage; Abducts, Upwardly Rotates, & Depresses Scapula

Elevates thorax during forced inhalation when scap is fixed

Question 16

Deltoid Origin & Insertion

Answer 16

O=Lateral 1/3 of clavicle, Acromion, & Scapular Spine

I=Deltoid Tuberosity

Question 17

Deltoid Action

Answer 17

Abducts Shoulder

AF=Flexion, Horizontal Adduction, & IR

PF=Extends, Horizontal Abducts, & ER

Question 18

Teres Major Origin & Insertion

Answer 18

O=Lateral Border of scap near the inferior angle

I=Crest of Lesser Tubercle

Question 19

Teres Major Action

Answer 19

Adduct, Extend, & IR

Question 20

Subscapularis Origin & Insertion

Answer 20

O=Subscapular Fossa

I=Lesser Tubercle

Question 21

Subscapularis Action

Answer 21

IR & Stabilize GH jt

Question 22

Infraspinatus Origin & Insertion

Answer 22

O=Infraspinous Fossa

I=Greater Tubercle

Question 23

Infraspinatus Action

Answer 23

ER & Adducts; Stabilizes GH jt

Question 24

Teres Minor Origin & Insertion

Answer 24

O=Lateral Border of Scapula

I=Greater Tubercle

Question 25

Supraspinatus Origin & Insertion

Answer 25

O=Supraspinous Fossa

I=Greater Tubercle

Question 26

Teres Minor Action

Answer 26

ER & adducts; Stabilize GH jt

Question 27

Supraspinatus Action

Answer 27

Abducts; Stabilizes GH jt

Question 28

Coracobrachialis Origin & Insertion

Answer 28

O=Coracoid Process

I=Medial surface of mid-shaft of humerus

Question 29

Coracobrachialis Action

Answer 29

Flexion & Adduction