Origins And Insertions 1

Front 1

Trapezius
Origins

Back 1

External Occipital Protuberance
Superior Nuchal Line/Ligament
Spinous Processes C7-T12

Front 2

Trapezius
Insertion

Back 2

Lateral 1/3 of Clavicle
Acromion
Spine of Scapula

Front 3

Trapezius
Innervation

Back 3

Motor Supply Cranial Nerve XI
Sensory C3-4

Front 4

Trapezius
Action

Back 4

Rotates, Retracts, & Elevates Scapula

Front 5

Latissimus Dorsi
Origin

Back 5

Spinous Processes T6-T12
Throacolumbar Fascia

REMEMBER THE 3 I'S

Iliac Crest
Inferior Angle of Scapula
Inferior 3 Ribs

Front 6

fascia

Back 6

Layers of fibrous tissue covering and separating muscles

Front 7

Latissimus Dorsi
Insertion

Back 7

Floor Intertubercular Sulcus

Front 8

Latissimus Dorsi
Innervation

Back 8

Thoracodorsal Nerve
(C6, C7, c8)

Front 9

Latissimus Dorsi
Action

Back 9

Climbing Muscle
Adducts
Internally Rotates and Extends Arm

Front 10

sulcus

Back 10

grove/farrow

Front 11

Tuberosity

Back 11

Large rounded projection

Front 12

Levator Scapulae
Origin

Back 12

Transverse Processes C1-C4

Front 13

Levator Scapulae
Insertion

Back 13

Superior part of medial border of scapula

Front 14

Levator Scapulae
Innervation

Back 14

Dorsal scapular nerve (c4 & C5)

Front 15

Levator Scapulae
Action

Back 15

Elevates scapula
rotates scapula medially
tilts glenoid cavity inferiorly

Front 16

Rhomboid Major & Minor
Origin

Back 16

Minor: spinous processes C7-T1
Major: spinous processes T2-T5

Front 17

Rhomboid Major & Minor
Insertion

Back 17

medial border scapula

Front 18

Rhomboid Major & Minor
Innervation

Back 18

Dorsal scapular nerve (C5)

Front 19

Rhomboid Major & Minor
Action

Back 19

Retract
rotate scapula medially
Depress glenoid cavity

Front 20

Deltoid
Origin

Back 20

lateral 1/3 clavicle
acromion
spine of scapula

Front 21

Deltoid
Insertion

Back 21

Deltoid tuberosity humerus

Front 22

Deltoid
Innervation

Back 22

Axillary Nerve (C5 & c6)

Front 23

Deltoid
Action

Back 23

Abducts Arms
Flexes & Extends arm (different fibers)

Front 24

Supraspinatus
Origin

Back 24

supraspinous fossa

Front 25

Supraspinatus
Insertion

Back 25

superior facet on the greater tubercle of humerus

Front 26

facet

Back 26

smooth, nearly flat articular surface

Front 27

tubercle

Back 27

small rounded projection/process

Front 28

Supraspinatus
Action

Back 28

Initiates abduction of arm
Assists deltoid in abduction
Holds humeral head in glenoid cavity

Front 29

Supraspinatus
Innervation

Back 29

Suprascapular Nerve (C5 & c6)

Front 30

Fossa

Back 30

Shallow, basinlike depression in a bone, often serving as an articular surface

Front 31

Infraspinatus
Origin

Back 31

infraspinous fossa

Front 32

Infraspinatus
Insertion

Back 32

middle facet on the greater tubercle of humerus

Front 33

Infraspinatus
Innervation

Back 33

suprascapular (C5 & c6)

Front 34

Infraspinatus
Action

Back 34

Laterally (externally) rotates arm; holds humeral head in glenoid cavity

Front 35

Teres Minor
Origin

Back 35

Superior Lateral border of scapula

Front 36

Teres Minor
Insertion

Back 36

Inferior facet of greater tubercle of humerus

Front 37

Teres Minor
Innervation

Back 37

Axillary nerve (C5 & c6)

Front 38

Teres Minor
Action

Back 38

Laterally (externally) rotates arm; holds humeral head in glenoid cavity

Front 39

Teres Major
Origin

Back 39

Dorsal surface of inferior angle of scapula

Front 40

Teres Major
Insertion

Back 40

medial lip of intertubercular sulcus of humerus

Front 41

Teres Major
Action

Back 41

Adducts and medially rotates the arm

Front 42

Teres Major
Innervation

Back 42

Lower subscapular Nerve (C6 & c7)

Both the Teres (this & Pronator Teres) are C6 & C7

Front 43

Subscapularis
Origin

Back 43

subscapular fossa

Front 44

Subscapularis
Insertion

Back 44

Lesser tubercle of humerus

Front 45

Subscapularis
Action

Back 45

Medially rotates arm
Adducts
Holds humeral head in glenoid fossa

Front 46

Subscapularis
Innervation

Back 46

Upper & Lower Subscapular Nerves (c5, C6, c7)

Front 47

Serratus Anterior:
Origin

Back 47

External surfaces of the lateral parts of ribs 1-8

Front 48

Serratus Anterior:
Insertion

Back 48

Anterior surface of the medial border of scapula

Front 49

Serratus Anterior:
Innervation

Back 49

Long Thoracic Nerve (c5, C6, C7)

Front 50

Serratus Anterior:
Action

Back 50

Rotates scapula laterally; protracts scapula and holds it against thoracic wall

Front 51

Pectoralis Major:
Origin

Back 51

Clavicular Head:
-Medial 1/2 of clavicle
Sternocostal head:
-Anterior surface sternum
-Superior 6 costal cartilages
-Aponeurosis of external oblique

Front 52

Pectoralis Major:
Insertion

Back 52

lateral lip of intertubercular sulcus of humerus

Front 53

Pectoralis Major:
Action (4 motions)

Back 53

Adducts and medially rotates humerus; clavicular head can flex humerus acting alone; sternocostal head can extend humerus from flexed position

Front 54

Pectoralis Major:
Innervation

Back 54

Medial (C8 & t1) and lateral (c5 & C6) pectoral nerves

Front 55

The 2 _____ are the same in action, but added together equal _____ in innervation. They also have similar _____.

Back 55

majors: Teres and Pectoralis
subscapularis
insertions

Front 56

Did you do _____ or _____ deltoid lifts?

Back 56

Innervation C5 & c6