Coracobrachialis

(Origin, Insertion)

Origin- Coracoid Process (with the Bicheps short head)

Insertion- Middle Shaft of Humerus

Coracobrachialis (Action, Innervation)

Action- Flex and Adduct shoulder

Innervation- Musculocutaneous

Deltiod 3x

(3x Origin- common Insertion- Innervation)

Anterior part- Ant. Lateral Clavicle

Middle part- Lateral edge of Acromion

Posterior part- posterior Border of acromion

Insertion- Deltoid tuberosity

Innervation- Axillary Nerve

Infraspinatus

(Origin- Insertion-Innervation)

Origin- Infraspinatous Fossa

Insertion- Middle facet of Greater Tubercle of Humerus

Innvervation- Suprascapular Nerve

Action- Laterally rotate shoulder

-Adduct shoulder

-extend shoulder

-Horizontal Abduct shoulder

-Stabalize head of humerus

Deltoid -Action

Action

(All fibers)- Abduct shoulder

(Anterior)- Flex the shoulder- medially rotate-horizontal adduct

(Posterior)- Extend-Laterally rotate- Horizontal abduct

Action

- Extend shoulder

-Adduct-Medially rotate

Latissimus Dorsi (Origin-Insertion-Innervation)

Origin

- Thoracolumbar Fascia

-Last six SP Thoracic

-Last 3 ribs

-posterior Illiac Crest

Insertion

Intertubecular groove of humerus

Innervation- Thoracodorsal Nerve

Levator Scapula (Action)

Action

-Elevate Scapula

-Downward rotate scapula

-Laterally flex head/neck

-Rotate head and neck same side

Unilaterally

-Extend head/neck

Levator Scapula (origin- insertion- innervation)

Origin- TP of C1-4

Insertion- Medial border/ superior angle of scapula

Innervation- Dorsal scapular Nerve

Pec Major

(Action)

Action- All fibers Adduct shoulder- medially rotate- assist in elevation of rib cage during force inhalation

Upper Fibers- Flex Shoulder- Horizontally Adduct

Lower Fibers- Extend shoulder

Origin- Medial Half of clavicle

Lateral edge of manubrium/sternum

costal cartilage of first 6 ribs

Insertion- lateral crest of interbecular groove

innervation- Lateral and Medial pectoral nerves

Action- Depress, abduct scapula

-tilts scapula anteriorly

origin- 3-5 ribs

insertion coracoid process

innervation- medial pectoral

Rhomboid maj/min (action)

Action- Adduct the scapula

-elevate scapula

-Downwardly rotate scapula

origin- (maj)SP t-2-5

(min)Sp C-7 - T-1

Insertion- Medial border of scapular

Innervation- Dorsal scapular

Seratus Anterior (action)

Serratus Anterior

(Origin, insertion, innervation)

Origin- Upper 9 ribs

Insertion- Anterior surface of medial border

Innervation Long thoracic

Action- Pulls clavicle inferiorly and anteriorly

-elevates 1st rib

stabalizes SC joint

Subclavious-origin-insertion-innervation

Origin- First Rib

insertion- Inferior lateral clavicle

Innervation- subclavian

Action- Medially rotate shoulder

-Stabalize head of humerus

Origin- Subscapular Fossa

insertion- lesser tubercule of humerus

Innervation-Upper and lower subscapular nerve

Action- Abduct shoulder

-stabilize head of humerus

Origin- Supraspinous fossa

Insertion- Upper facet of greater tubercule

innervation- suprascapular nerve

Origin- Lateral border of scapula

insertion- medial crest of interbecular groove

innervation- lower subscapular

Origin- Superior half of lateral border

Insertion- lower facet of greater tubecular groove

innervation- Axillary nerve

Actions

Upper fibers- extend head/neck- laterally flex(same side)-Rotates (opposite side)-elevates scapula-upward rotates scapula

Middle fibers- Adduct scapula and stabilize

Lower fibers- Depress scapula- upward rotate

Origin- Upper- EOP, superior nuchel line of ociput, ligimentum nuchae (insertion- lateral clavicle)

Middle-C-7-T3 (insertion- Medial acromion- Sup. spine)

Lower- T-4- T12 (insertion- Inferior Spine)

Innervation- Spinal accessory (Cervical plexus)

Anconeus-action

Action

-Extend the Elbow (humeroulnar joint)

Origin- lateral epicondyle of humerus

insertion- Olecranon Process/lateral edge of unlar shaft

innervation- Radial

action

-Flexion of the elbow

-supination

-flex shoulder

Origin- (Short head)- coracoid process

(long head)- through the intertubecular groove to the supragleniod tubercule of scapula

insertion- Radial tuberosity/ aponeurosis of Biceps brachii

innervation- musculocutaneous

Origin- distal 1/2 of anterior humerus

insertion- tuberosity and coronoid process of ulna

Innervation- Musculocutaneous nerve

origin- Lateral supracondylar ridge of humerus

insertion- styloid process of radius

innervation- radial

action

-Pronate forearm

-Assist in elbow flexion

origin- Medial epicondyle, common flexor tendon, coronoid process of ulna

insertion- Middle lateral surface of radius

innervation- median

Origin- medial anterior distal ulna

insertion- lateral anterior radius

innervation- median

Origin- Lateral epicondyle, annular ligament, supinator crest of ulna

Insertion- Lateral surface of proximal shaft of radius

innervation- Radial

Action- All heads: Extend the elbow

Long Head: Extend shoulder/ Adduct the shoulder

origin- Long head: Infraglenoid tubercule

Lateral head:Post. proximal 1/2 of humerus

Medial head: Post. distal 1/2 of humerus

Insertion- Olecranon Process of ulna

innervation- Radial

Extend the wrist

Abduct the wrist

Assist in flexion

origin- lateral supracondylar ridge

insertion longus:base of second metacarpal

brevis: base of third

innervation: radial

Action- Extend the wrist

-Adduct the wrist

Origin- Lateral epicondyle

insertion- base of 5th metacarpal

innervation- radial

Action- Flex Wrist

-flex elbow

-abduct wrist

origin- Medial epicondyle

insertion- base of 2-3 metacarpals

innervation-median

Action- Flex wrist

-adduct wrist

-Assist in flex elbow

Flexor carpi unlaris

origin, insertion, innervation

origin- medial epicondyle

-proximal 1/2 of ulnar shaft

insertion- pisiform

Innervation- Ulnar

action

-Flex wrist

-tense the palmar fascia

-flex elbow

Palmaris Longus-

origin,insertion, innervation

Origin- Medial epicondyle

Insertion-base of 2-3 metacarpals

Innervation- median

Abductor Pollicis Longus- Action

Action- (part of

Abduct the thumb

extend the thumb

Abductor Pollicis Longus-origin,insertion, innervation

(bottom of snuff box)

Origin- posterior surface of radius and ulna/ interosseous

Insertion- Base of 1st metacarpal

innervation- radial

origin- lateral epicondyle

insertion- proximal phalanx of 2nd thru 5th

innervation-radial