27 terms

Origins and Insertations (Upper Extremity)

Trapezius Muscles
O- Base of skull, occipital proturberance
I- outer clavicle, acromion Process,spine of scapula
A-Elevation, depression, upward rotation and adduction (retraction)of scapula
P-neck region to 12th thoracic and laterally from vertebral to scapula
Ex- shoulder shrugs
Levator Scapulae
O- Transverse Process of C4
I- Medial border of scapula above spine
A-Elevates scapula
Ex- Shoulder shrugs
Rhomboids Muscles
O- Spinous Process of C7-T5
I-Medial border of scapula
A-Adduction and Downward rotation of Scapula
Ex- Chins and dips
Serratus Anterior
O-surface of the upper nine ribs
I- Coastal aspect of medial border of scapula
A- Abduction and Upward Rotation of Scapula
P- front and lateral side of chest below 5-6 rib
Ex- overhead press, push ups, bench press
Pectoralis Minor
O- 3rd to 5th ribs
I- Carotoid Process of Scapula
A- Abduction and Downward Rotation of Scapula
P- pit of shoulder
Ex- push ups w/ help of SA
Supraspinatus Muscle
O- supraspinatus fossa
I-top of greater tubercle of humerus
A- weak abduction of shoulder
Ex-throwing ball
Infraspinatus and teres minor
O- Posterior surface of scapula below spine and lateral border
I- Greater tubercle of humerus on posterior side
A-Horizontal abduction,outward rotation,extension of shoulder
P- between scap and humerus on posterior
Ex- chinning, rope climbing,dips in parallel bars
Subscapularis muscle
O-Anterior surface of subscapular fossa
I-Lesser tubercle of humerus
A- Adduction and extension of shoulder
Teres Major muscle
O-Lower 1/3 of the lateral border of the scapula
I-Intertubercular groove of humerus
A- Extension, Inward Rotation and adduction
P- posterior, diagnolly from inferion scapula
Ex- chinning, dips, rope, uprise mvt
Deltoideus Muscle
O- Front 1/3 of clavicle,border of the acromion, and lower edge of the spine of scapula
I- Deltoideus tubercle on the middle outer surface of the humerus
A- Abduction,Flexion, Extension
P-over head of humerus from ant to post
Ex- dumbell in hand raise to side
Latissimus Dorsi muscle
O-Posterior crest of ilium,back of sacrum and spinous processes of T6-T12, and under 3 ribs
I- Medial side of the intertubercular groove of humerus
A-Extension, rotation inward, horizontal abduction( extension), adduction
P- lateral, post of trunk below armpit
Ex- chinning, dips, rope, uprise mvt
Pectoralis Major muscle
O-Anterior surface of clavicle and coastal cartilages of 1st 6 ribs and sternum
I-Flat tendon 2 or 3 inches wide to the lateral side of the intertubercular groove
A- Flexion, extension, horizontal adduction (flexion), rotation inward, adduction- abduction
P- chest between clavicle and 6th rib
Ex- Push ups, pull ups
Biceps Brachii muscle
O-top of coracoid process and glenoid fossa
I- radial tuberusity
A- flexion of elbow, supination of forearm and flexion of shoulder
P- anterior aspect of humerus
Ex- curling, chinning, rope climbing
Brachialis muscle
O- lower half of anterior portion of humerous
I-Coranoid process of ulna
A- Flexion of elbow
P-lateral side of upper arm under biceps
Ex- whenever elbow flexes
Brachioradialis muscle
O-lower condyloid of humerus
I- radius at the styloid process
A- Flexion of elbow, pronation and supination
P- on lateral side of forearm
Ex- strong elbow flexor
Triceps Brachii muscle
O- Long head of scapula, medial head and lateral head of humerus
I- olecranon proces of ulna
A- Extension of elbow
P-post and lateral humerus
Ex- push ups, dips, pressing barbell upward
Anconeous Muscle
O-posterior surface of condyle of humerus
I-posterior surface of ulna and olecranon
A- Extension of Elbow
P- lateral aspect of olecranon
Ex- pulls synovial membrane of elbow
Supinator Muscle
O- outer condyloid of humerus
I-outer surface of upper radius
A- supination of elbow
Ex- turning a screwdriver, throwing baseball
Pronator Teres Muscle
O- inner condyloid of humerus and medial side of ulna
I- outer surface of the radius
A- flexion of elbow and pronation of forearm
Flexor Carpi Radialis Muscle
O-medial condyle of humerus
I- base of 2nd and 3rd metacarpals (palmar aspect)
A-- Flexion of the wrist and elbow
Flexor Carpi Ulnaris Muscle
O- medial condyle of humerus
I-Base of 5th metacarpal
A- Flexion of wrist and elbow
Extensor Carpi Radialis Brevis
O- lateral condyle of humerus
I- Base of 3rd metacarpal (dorsal surface)
A- Extension of wrist and extension
Extensor Carpi Ulnaris Muscle
O- lateral condyle of humerus
I- Base of 5th metacarpal (dorsal surface)
A- Extension and adduction of wrist, Extension of forearm
Extensor digitorium communis muscle
O-lateral condyle of humerus
I- 4 tendons to the base of the 2nd and third phalanges of the four fingers (dorsal surface)
A-Extension of fingers, wrist and elbow
Flexor digitorum sublimis muscle
O- Medial condyle of humerus
I- middle phalax of the four fingers (palmar)
A-flexion of fingers, wrist and elbow
Extensor pollicis longus muscle
O- posterior surface of ulnar
I- Base of distal phalax of thumb (dorsal surface)
A- extension of wrist and thumb
Flexor pollicis longus muscle
O- middle anterior surface of radius
I- base of distal phalanx of thumb (palmar surface)
A- flexion of wrist and thumb