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Flashcards in Exam 2 Deck (39)
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1

forming the rounded contour of the shoulder
•Forms a “v” shape at the insertion point of the Deltoid Tuberosity
•3 segments
–Anterior
–Middle
–Posterior
•All abduct the shoulder

Deltoids

2

Origin
–Clavicle (Anterior Lateral Third)
•Insertion
–Deltoid Tuberosity (Humerus)
•Action
–Abduct shoulder
–Flex Shoulder
–Medial Rotates Shoulder
–Horizontally Adduct Shoulder
•Innervation
–Axillary

Anterior Deltoid

3

Origin
–Acromion process and Spine of Scapula
•Insertion
–Deltoid Tuberosity (Humerus)
•Action
–Abducts Shoulder
•Innervation
–Axillary

Middle Deltoid

4

Origin
–Spine of Scapula
•Insertion
–Deltoid Tuberosity (Humerus)
•Action
–Abduct shoulder
–Extends Shoulder
–Laterally Rotates Shoulder
–Horizontally Abduct Shoulder

Posterior Deltoid

5

extends longitudinally from the occipital bone to the lower thoracic vertebrae and laterally to the spine of the scapula
•Divided into 3 groups:
–Upper fibers
•Descending part
•Supports weight of arm
–Middle fibers
•Transverse part
•Retracts the scapulae
–Lower fibers
•Ascending part
•Medially rotates (IR) and depresses scapula

Trapezius

6

Origin
–External Occipital protuberance C7-T12
•Insertion
–Lateral 1/3 clavicle
–Acromion
–Scapular spine
•Action
–Upper:
•Extend/laterally flex head
•rotate to opposite side,
•elevation, upward rotation

Trapezius

7

Origin
–Lower vertebrae
–Lower ribs
–Iliac Crests
–Sacrum
•Insertion
–Bicipital Grove (humerus)
•Action
–Extend shoulder
–Adduct Shoulder
–Medially Rotates
•Innervation

Latissimus Dorsi

8

•Origin
Inferior angle
Lower 1/3 of
•Insertion
Lesser tubercle (humerus)
•Action
–Extend shoulder
–Adducts shoulder
–Medially rotates
•Innervation
–Lower Subscapular

Teres Major

9

•Origin
–Supraspinus Fossa of Scapula
•Insertion
–Greater Tubercle (Humerus)
•Action
–Abduct Shoulder
•Innervation
–Subscapular

Supraspinatus

10

Origin
–Infraspinus Fossa of Scapula
•Insertion
–Greater Tubercle (Humerus)
•Action
–External Rotation
–Adduct Shoulder
•Innervation
–subscapular

Infraspinatus

11

Origin
–Lateral Border of Scapula (upper 2/3)
•Insertion
–Greater Tubercle (Humerus)
•Action
–External Rotation
–Adduct Shoulder
–Stabilize head of humerus
•Innervation
–Axillary

Teres Minor

12

Origin
–Subscapular Fossa of Scapula
•Insertion
–Lesser Tubercle (Humerus)
•Action
–Internally Rotation
–Stabilize head of humerus
•Innervation
–Upper and lower subscapular

Subscapularis

13

Origin
•Spinous Processes of T2 to T5
•Insertion
•Medial border, below scapular spine
•Action
•Elevation (S/T)
•Retraction (S/T)
•Downward rotation (S/T)
•Innervation
•Dorsal Scapular

Rhomboid Major

14

Origin
•Spinous Processes of C7 to T1
•Insertion
•Medial border at scapular spine
•Action
•Elevation (S/T)
•Retraction (S/T)
•Downward rotation (S/T)
•Innervation
•Dorsal Scapular

Rhomboid Minor

15

Origin
•Transverse processes C1 to C4
•Insertion
•Medial border above scapular spine
•Action
•Elevation (S/T)
•Retration (S/T)
•Innervation
•Cervical
•Dorsal scapular

Levator Scapulae

16

Origin
•Ribs 1-9
•Insertion
•Medial border of scapula
•Action
•Protraction (S/T)
•Upward rotation (S/T)
•Innervation
•Long Thoracic

Serratus Anterior

17

Origin
•Clavicular “upper fibers”: Medial half of clavicle
•Sternal “lower fibers”: Sternum & cartilage of ribs 1-6
•Insertion
•Bicipital groove (humerus)
•Action
•Upper fibers: Flexion, adduction, IR, horizontal flexion (adduction) (G/H)
•Lower fibers: Extension, adduction, IR (G/H)
•Innervation
•Lateral/medial pectoral

Pectoralis Major

18

Origin
•Ribs 3-5
•Insertion
•Coracoid Process
•Action
•Depression (S/T)
•Protraction (S/T)
•Downward rotation (S/T)
•Innervation
•Medial pectoral

Pectoralis Minor

19

Origin
•1st rib
•Insertion
•Middle 1/3 of clavicle (inferior side)
•Action
•Depress clavicle
•Stabilizes SC Joint
•Innervation
•Subclavian

Subclavius

20

Origin
•Long head: supraglenoid tubercle
•Short head: coracoid process
•Insertion
•Radial Tuberosity
•Action
•Flexion (G/H)
•Also acts on the elbow, which
we will discuss next chapter 
•Innervation
•Musculocutaneous

Biceps Brachii

21

Origin
•Long head: Infraglenoid Tubercle
•Lateral head: Upper half of posterior humerus
•Medial head: Lower half of posterior humerus
•Insertion
•Olecranon Process
•Action
•Long head: Extension (G/H)
•Another elbow mover, which we will discuss next chapter
•Innervation
•Radial

Triceps

22

Origin
•Coracoid process
•Insertion
•Middle 1/3 of the humerus
•Action
•Flexion (G/H)
•Adduction (G/H)
•Innervation
•Musculocutaneous

Coracobrachialis

23

Clavicle
–Scapula
–Sternum

Bones and Landmarks
•Shoulder Girdle

24

Sternal Extremity
•Acromial Extremity
•Conoid Tubercle are associated with ?

Shoulder Girdle: Clavicle

25

Vertebral Border (Medial Margin)
•Axillary Border (Later Margin)
•Superior Border
•Superior Angle
•Inferior Angle are associated with ?

Shoulder Girdle: Scapula

26

Coracoid Process
•Acromion Process
•Scapular (Superior) Notch are associated with ?

Shoulder Girdle: Scapula

27

Glenoid Cavity
•Subscapular Fossa
•Supraglenoid Tubercle
•Infraglenoid Tubercle are associated with ?

Shoulder Girdle: Scapula

28

Supraspinatus Fossa
•Spine
•Infraspinatus fossa are associated with ?

Posterior Scapula

29

Jugular Notch
•Manubrium
•Body
•Xiphoid process are associated with ?

Shoulder Girdle: Sternum

30

Glenohumeral
Acromioclavicular
Sternoclavicular are ?

Joints