Origin, insertion, action, innervation of the upper extremity
Upper Trap
O- Base of occiput and upper cervical SP's I- Lateral clavicle and acromion I-CN XI, C3-4
Coracobrachialis
O- Coracoid process I- medial shaft of humerus I- musculocutaneous nerve
Subclavius
O- Costoclavicular first rib I- Inferior middle 1/3 of clavicle I- Nerve to Sublavius
Infraspinatus
O- Infrasoinatus fossa I-Under acromion to greater tubercle I- Suprascapular Nerve
Delt middle
O- Lateral acromion I-Deltoid tuberosity I- Axillary nerve
Delt anterior
O- Lateral clavicle I- Deltoid tuberosity I- Axillary
Delt posterior
O- Lateral scapular spine I- Deltoid tuberosity I- Axillary N
Pec Major clavicular head
O- Medial clavicle I- Lateral bicipital groove I- Medial and lateral pectoral nerve
Lower Trapezius Action
Scapular depression and upward rotation
brachilais insertion
Ulnar Tuberosity
pec minor origin
anterior medial ribs 3-5
Brachilis Origin
anterior shaft of humerus
lateral clavicle
lateral clavicle
flexor digitorum superficialis origin
medial epicondyle radius and ulna
Levator scapula insertion
near superior angle of scapula
Subclavius innervation
nerve to subclavius
flexor carpi ulnaris insertion
pisiform, hook of hamate, base of 5th metacarpal
Rhomboids action
retraction downward rotation assists elevation
serratus anterior origin
ribs 1-8
Middle Trapezius Action
scapular retraction
Pec Major Clavicular action
shlder flexion 0-90 adduction IR rotation horz adduction
Middle Trapezius Insertion
spine of scapula and acromion
Subclavius Origin
1st rib
delt middle action
Abduction and stabilizes head of humerus in the glenoid fossa
Lower Trapezius Insertion
Base of scapular spine
radial nerve innervates
Brachioradialis Triceps Anconeous Supinator
rhomboids origin
C7 Upper to mid thoracic SPs
Middle Trapezius Innervation
CN XI, C3-4
infraspinatus action
ER, horizontal aBduction
Subclavius Insertion
Inferior surface of middle third of clavicle
Palmar base of 2nd and 3rd metacarpals
Insertion for Flexor Carpi Radialis
Middle Trapezius origin
Lower cervical; upper thoracic SPs
Lower Trapezius Origin
Middle/lower thoracic SPs
Pec minor
O- Anterior-medial ribs 3-5 I-coracoid process I- medial pec nerve
Teres Minor
O- Axillary border of scapula I- Greater tubercle I- Axillary
Teres Major
O- Axillary border of scapula I- Medial to bicipital groove I- Lower subscapular nerve
Serratus Anterior
O- Lateral upper 8 ribs I- Dives btwn scapula and ribcage to attach to anterior vertebral border of scapula I- Long thoracic N
Lower Trap
O- Lower cervicle; upper thoracic SPs I- Base of scapular spine I- CN XI,C3-4
latissimus dorsi
O- Mid thoracic and lumbar SPs, sacrum, illiac crest, and lower 3 ribs, inferior angle of scapula I-Medial bicipital groove I- Thoracodorsal nerve
Suprispinatus
O- Supraspinous fossa I- Under acromion greater tubercle I- Suprascapular N
Subscapularis
O- Supraspinous fossa I- Under acromion to greater tubercle I- Subscapular N
Levator Scapula (found under trap)
O- Upper Cervical TPs I- Superior angle of scapula I- Dorsal scapular nerve, C3-4
Rhomboids- major and minor (under trap)
O-C7 & upper to mid- thoracic SP I- Near superior angle of scapula I- Dorsal scapular nerve, C3-4
Middle Trap
O-Lower cervicle/ upper thoracic SP I-Spine of the scapula & acromion I-CN XI,C3-4
Upper Trap Origin
Occipital bone, nuchal ligament on upper cervical spinous processes
medial epicondyle and coranoid process
Origin of pronator teres
Upper Trapezius Insertion
Outer third of clavicle, acromion process
flexor carpi radialis insertion
Palmar base of 2nd and 3rd metacarpals
Pectoral Nerve Innervates
Pec major and pec minor
pronator teres action
Pronates the forearm, assists in elbow flexion
pec minor action
Scapular depression, protraction, downward rotation
serratus anterior action
Scapular protraction and upward rotation prevents winging
Supraspinatus Insertion
Under acromion to greater tubercle
Levator Scapula origin
Upper cervicle TPs
Teres major action
adduction, IR extension, hyperextension
Latissimus dorsi action
adducts, extends, and medially rotates humerus
What muscles flex the elbow?
biceps brachii, brachialis, brachioradialis, pronator teres
musculocutaneous nerve
coracobrachialis, biceps brachii, brachialis
bicep brachi short head origin
coracoid process
pec minor insertion
coracoid process of scapula
delt anterior, middle, and posterior insertion
deltoid tuberosity
axillary nerve innervates
deltoids and teres minor
levator scapula innervation
dorsal scapular nerve C3-4
Bicep short head action
elbow flexion forearm supination
bicep long head action
elbow flexion forearm supination shoulder flexion
levator scapula action
elevates and downward rotates scapula
Upper Trapezius Action
elevation, upward rotation
Delt posterior action
extension, ER horizontal aBduction
Coracobrachialis action
flexes and adducts arm
flexor digitorum superficialis action
flexes digits 2-5
delt anterior action
flexion IR horz adduction
Pisiform and palmar base of 5th metacarpal
flexor carpi ulnaris insertion
ulnar nerve innervates
flexor carpi ulnaris, flexor digitorum profundus
infraspinatus insertion
greater tubercle of humerus
anconeus insertion
inferolateral olecranon
thoracodorsal nerve
innervates latissimus dorsi
lateral bicipital groove
insertion for pec major
radial tuberosity
insertion of bicep long and short heads
radial styloid process of radius
insertion of brachioradialis
palmar middle phalanx 2-5
insertion of flexor digitorum superficilais
midshaft of radius
insertion of pronator teres
medial bicipital groove
insertion of teres major and latissimus dorsi
delt middle origin
lateral acromion
Anconeus Origin
lateral epicondyle of humerus
Deltoid (posterior) origin
lateral scapular spine
serratus anterior innervation
long thoracic nerve
Teres major innervation
lower subscapular nerve
pec major clavicular head origin
medial half of clavicle
pec minor innervation
medial pectoral nerve
Corachobrachialis insertion
medial surface of humerus
flexor digitorum superficialis insertion
middle phalanges of digits 2-5
lateral supracondylar ridge
origin of brachioradialis
coracoid process
origin of coracobrachialis and short head of biceps muscles
medial epicondyle radius and ulna
origin of flexor digitorum superficialis
infraspinatus fossa of scapula
origin of infraspinatus
Axillary border of scapula
origin of teres minor
infraglenoid tubercle
origin of triceps brachii long head
medial epicondyle of humerus
origin of: flexor carpi radialis palmaris longus flexor carpi unlnaris
palmaris longus insertion
palmar fascia
olecranon process
projection at the upper end of the ulna that forms the bony point of the elbow INSERTION for all 3 tricep heads
median nerve innervates
pronator teres flexor carpi radialis palmaris longus flexor digitorum superficialis
anconeus action
protects annular ligament from being pinched during elbow extension
Supraspinatus Action
shoulder abduction stabilizes humerus in glenoid fossa
Pec Major Sternal action
shoulder extension from 180-90 adduction IR horz adduction
greater tubercle
site of the attachment of rotator cuff muscles: Teres minor, supraspinatus, infraspinatus, subscapularis
Upper Trapezius Innervation
spinal accessory nerve (CN XI), C3, C4
Subclavius action
stabilize clavicle in the sc joint; depresses clavicle; elevate the 1st rib; rotate clavicle as part of scapulohumeral rhythm
Pec Major Sternal origin
sternum and top 6 ribs
subscapular nerve innervates
subscapularis, teres major, infraspinatus
Bicep long head origin
supraglenoid tubercle
suprasoinatus origin
supraspinous fossa
latissimus dorsi origin
thoracic and lumbar SPs sacrum iliac crest lower 3 ribs inf angle of scapula
What muscles extend the elbow?
triceps brachii, anconeus
serratus insertion
vertebral border of scapula
rhomboids insertion
vetebral border of scapula
palmaris longus action
wrist flexion
flexor carpi radialis action
wrist flexion, radial deviation
flexor carpi ulnaris action
wrist flexion, ulnar deviation