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Details

Upper Extremity Muscles
Actions, Origins, and Insertions
60
Anatomy
Professional
06/15/2008

Additional Anatomy Flashcards

 


 

Cards

Term

 

Coracobrachialis

 

(Origin, Insertion)

Definition

 

Origin- Coracoid Process (with the Bicheps short head)

 

Insertion- Middle Shaft of Humerus

Term

 

 

 

Coracobrachialis (Action, Innervation)

Definition

 

 

Action- Flex and Adduct shoulder

Innervation- Musculocutaneous

Term

Deltiod 3x

(3x Origin- common Insertion- Innervation)

Definition

Anterior part- Ant. Lateral Clavicle

Middle part- Lateral edge of Acromion

Posterior part- posterior Border of acromion

 

Insertion- Deltoid tuberosity

 

Innervation- Axillary Nerve

Term

 

 

Infraspinatus

(Origin- Insertion-Innervation)

Definition

Origin- Infraspinatous Fossa

 

Insertion- Middle facet of Greater Tubercle of Humerus

 

Innvervation- Suprascapular Nerve

Term
Infraspinatus- action
Definition

Action- Laterally rotate shoulder

-Adduct shoulder

-extend shoulder

-Horizontal Abduct shoulder

-Stabalize head of humerus

Term

Deltoid -Action

 

Definition

Action

(All fibers)- Abduct shoulder

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

(Posterior)- Extend-Laterally rotate- Horizontal abduct

 

Term
Latissimus Dorsi (Action)
Definition

Action

- Extend shoulder

-Adduct-Medially rotate

Term

 

 

Latissimus Dorsi (Origin-Insertion-Innervation)

Definition

Origin

- Thoracolumbar Fascia

-Last six SP Thoracic

-Last 3 ribs

-posterior Illiac Crest

Insertion

Intertubecular groove of humerus

Innervation- Thoracodorsal Nerve

Term

Levator Scapula (Action)

 

Definition

Action

-Elevate Scapula

-Downward rotate scapula

-Laterally flex head/neck

-Rotate head and neck same side

Unilaterally

-Extend head/neck

Term

 

 

Levator Scapula (origin- insertion- innervation)

Definition

Origin- TP of C1-4

Insertion- Medial border/ superior angle of scapula

Innervation- Dorsal scapular Nerve

Term

Pec Major

(Action)

Definition

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

Term
Pec Major (origin, insertion, innervation)
Definition

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

Term
Pec Minor (Action)
Definition

Action- Depress, abduct scapula

-tilts scapula anteriorly

Term
Pec Minor- origin-insertion-innervation
Definition

origin- 3-5 ribs

insertion coracoid process

innervation- medial pectoral

Term

Rhomboid maj/min (action)

 

Definition

Action- Adduct the scapula

-elevate scapula

-Downwardly rotate scapula

Term
Rhomboids maj/min (origin, insertion, innervation)
Definition

origin- (maj)SP t-2-5

(min)Sp C-7 - T-1

 

Insertion- Medial border of scapular

Innervation- Dorsal scapular

Term

Seratus Anterior (action)

 

Definition
Action- Abduct scapula- hold the medial border of scapula against rib cage (may also assist in forced inhalation)
Term

Serratus Anterior

(Origin, insertion, innervation)

Definition

Origin- Upper 9 ribs

Insertion- Anterior surface of medial border

Innervation Long thoracic

Term
Subclavious (Action)
Definition

Action- Pulls clavicle inferiorly and anteriorly

-elevates 1st rib

stabalizes SC joint

Term

Subclavious-origin-insertion-innervation

 

Definition

Origin- First Rib

insertion- Inferior lateral clavicle

Innervation- subclavian

Term
Subscapluaris -action
Definition

Action- Medially rotate shoulder

-Stabalize head of humerus

 

Term
Subscapularis- origin, insertion, innervation
Definition

Origin- Subscapular Fossa

insertion- lesser tubercule of humerus

Innervation-Upper and lower subscapular nerve

Term
Supraspinatus- action
Definition

Action- Abduct shoulder

-stabilize head of humerus

 

 

Term
Supraspinatus- origin, insertion, innervation
Definition

Origin- Supraspinous fossa

Insertion- Upper facet of greater tubercule

innervation- suprascapular nerve

Term
Teres Major- action
Definition
Action- extend the shoulder-adduct the shoulder- medial rotation
Term
Teres major- Origin, insertion, innervation
Definition

Origin- Lateral border of scapula

insertion- medial crest of interbecular groove

innervation- lower subscapular

Term
Teres Minor- action
Definition
Action-Laterally rotate shoulder-adduct the shoulder-horizontally abduct-extend the shoulder
Term
Teres minor- origin, insertion, innervation
Definition

Origin- Superior half of lateral border

Insertion- lower facet of greater tubecular groove

innervation- Axillary nerve

Term
Trapezious 3x- actions
Definition

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

Term
Trapezious 3x origin, insertion, innervation
Definition

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)

 

Term

Anconeus-action

 

 

Definition

Action

-Extend the Elbow (humeroulnar joint)

Term
Anconeus (elbow) origin, inseriton, innervation
Definition

Origin- lateral epicondyle of humerus

insertion- Olecranon Process/lateral edge of unlar shaft

innervation- Radial

Term
Biceps brachii- action
Definition

action

-Flexion of the elbow

-supination

-flex shoulder

 

Term
Biceps Brachii - origin, insertion, innervation
Definition

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

Term
Brachialis- Action
Definition
Action- flexion of elbow
Term
Brachialis- origin, insertion, innervation
Definition

Origin- distal 1/2 of anterior humerus

insertion- tuberosity and coronoid process of ulna

Innervation- Musculocutaneous nerve

Term
Brachioradialis- Action
Definition
Action- Flex the elbow, assists in pronation/supination
Term
Brachioradialis- origin, insertion, innervation
Definition

origin- Lateral supracondylar ridge of humerus

insertion- styloid process of radius

innervation- radial

Term
Pronator teres-action
Definition

action

-Pronate forearm

-Assist in elbow flexion

Term
Pronator teres- origin, insertion, innervation
Definition

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

insertion- Middle lateral surface of radius

innervation- median

Term
Pronator Quadratus- Action
Definition
Action- Pronate forearm
Term
Pronator Quadratus- origin, insertion, innervation
Definition

Origin- medial anterior distal ulna

insertion- lateral anterior radius

innervation- median

Term
Supinator- Action
Definition
Action- Supinate the forearm
Term
Supinator- origin, insertion, innervation
Definition

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

Insertion- Lateral surface of proximal shaft of radius

innervation- Radial

Term
Triceps brachii- Action
Definition

Action- All heads: Extend the elbow

Long Head: Extend shoulder/ Adduct the shoulder

 

Term
Triceps brachii- origin, insertion, innervation
Definition

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

Term
Extensor Carpi Radialis longus/Brevis-Action
Definition

Extend the wrist

Abduct the wrist

Assist in flexion

 

Term
Extensor carpi radialis longus/brevis-origin, insertion, innervation
Definition

origin- lateral supracondylar ridge

insertion longus:base of second metacarpal

brevis: base of third

innervation: radial

Term
Extensor carpi Ulnaris-Action
Definition

Action- Extend the wrist

-Adduct the wrist

Term
Extensor carpi ulnaris- origin, insertion, innervation
Definition

Origin- Lateral epicondyle

insertion- base of 5th metacarpal

innervation- radial

Term
Flexor Carpi Radialis-Action
Definition

Action- Flex Wrist

-flex elbow

-abduct wrist

Term
Flexor carpi Radialis- origin, insertion,innervation
Definition

origin- Medial epicondyle

insertion- base of 2-3 metacarpals

innervation-median

Term
Flexor carpi ulnaris- Action
Definition

Action- Flex wrist

-adduct wrist

-Assist in flex elbow

Term

Flexor carpi unlaris

origin, insertion, innervation

Definition

origin- medial epicondyle

-proximal 1/2 of ulnar shaft

insertion- pisiform

Innervation- Ulnar

Term
Palmaris Longus-action
Definition

action

-Flex wrist

-tense the palmar fascia

-flex elbow

 

Term

Palmaris Longus-

origin,insertion, innervation

Definition

Origin- Medial epicondyle

Insertion-base of 2-3 metacarpals

Innervation- median

Term

Abductor Pollicis Longus- Action

Definition

Action- (part of

Abduct the thumb

extend the thumb

Term

Abductor Pollicis Longus-origin,insertion, innervation

 

(bottom of snuff box)

Definition

Origin- posterior surface of radius and ulna/ interosseous

Insertion- Base of 1st metacarpal

innervation- radial

Term
Extensor Digitorum action
Definition
Action-extend the 2nd thru 5th fingers
Term
Extensor Digitorum- origin, insertion, innervation
Definition

origin- lateral epicondyle

insertion- proximal phalanx of 2nd thru 5th

innervation-radial

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