Upper extremity & shoulder muscles

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. subclavius

2. first rib & costal cartilage

3. anterior surface of medial border of scapula

4. depression of clavicle

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. pectoralis major,

2. sternal end of clavicle, sternum & cartilage of ribs 1-6

3. crest of greater tubercule (humerus) & intertubercular sulcus

4. adduction & medial rotation at shoulder

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. pectoralis minor

2. ribs 3-5

3. medial surface of coracoid process

4. depression & abduction of scapula

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. serratus anterior

2. external surface of ribs 1-8

3. anterior surface of medial border of scapula

4. abduction of scapula

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. levator scapulae

2. TVPs of C1-C4

3. medial border of scapula between superior angle & superior part of spine

4. rotation and extension of head & neck

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. trapezius

2. external occipital protuberance, medial superior nuchal line, ligamentum, nuchae & SPs of C7-T12

3. lateral 3rd of clavicle, acromion & spine of scapula

4. lateral flexion and extension of scapula

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. rhomboid major

2. SPs of T2-T5

3. medial border of scapula between spine & inferior angle

4. adduction of scapula

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. rhomboid minor

2. SPs of C7-T1

3. upper medial border of scapula

4. adduction of scapula

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. latissimus dorsi

2. inferior angle of scapula, SPs of T6-T12, ribs 8-12, thoracolumbar fascia & iliac crest

3. floor of intertubercular sulcus

4. extension at shoulder

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. deltoid

2. lateral 3rd of clavicle, acromion, & spine of scapula

3. deltoid tuberosity

4. flexion & extension at shoulder

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. supraspinatus

2. supraspinous fossa

3. greater tubercle of humerus

4. abduction at shoulder

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. infraspinatus

2. infraspinous fossa

3. greater tubercule of humerus

4. lateral rotation & adduction at shoulder

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. teres minor

2. upper 2/3 of lateral border of scapula

3. greater tubercule

4. lateral rotation & adduction at shoulder

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. subscapularis

2. subscapular fossa

3. lesser tubercule

4. medial rotation at shoulder

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. teres major

2. inferior angle and lower 3rd of lateral border of scapula

3. crest of lesser tubercule

4. extension at shoulder (synergist of latissimus dorsi)

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. brachialis

2. distal half of anterior surface of humerus

3. coronoid process & ulnar tuberosity

4. flexion at elbow

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. biceps brachii

2. long head - supraglenoid tubercule; short head - coracoid process

3. radial tuberosity

4. flexion at elbow & at shoulder (long head)

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. coracobrachialis

2. coracoid process

3. medial surface of mid-humeral shaft

4. flexion & adduction at shoulder

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. triceps brachii

2. long head - infraglenoid tubercule; lateral head - posterior surface of proximal humerus; medial head - posterior surface of distal humerus

3. olecranon process

4. extension at elbow

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. brachioradialis

2. proximal 3rd of lateral supracondylar ridge of humerus

3. styloid process of radius

4. assist pronation & supination of forearm

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. pronator teres

2. coronoid process & medial epicondyle

3. middle of lateral surface of radius

4. pronation of forearm

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. pronator quadratus

2. distal anterior surface of ulna

3. distal anterior of radius

4. pronation of forearm

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. flexor carpi radialis

2. medial epicondyle (humerus)

3. base of metacarpal 2

4. flexion of hand

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. palmaris longus

2. medial epicondyle

3. palmar aponeurosis & flexor retinaculum

4. flexion of hand

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. flexor carpi ulnaris

2. medial epicondyle & posterior border of proximal ulna

3. base of metacarpal 5, pisiform & hook of hamate

4. flexion of hand

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. flexor digitorum superficialis (flexor digitorum profundus is right under it)

2. medial epicondyle, ulnar collateral ligament, coronoid process, interosseous membrane & proximal radius

3. bases of distal phalanges 2-5

4. flexion of hand, interphalangeal (IP) & metacarpophalangeal (MCP) joints digits 2-5

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. flexor pollicis longus

2. anterior surface of radius and interosseous membrane

3. base of distal phalanx on digit 1

4. flexion at wrist and flexion of IP & MCPjoints digit 1

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. flexor pollicis brevis

2. flexor retinaculum, trapezium, trapezoid & capitate

3. base of proximal phalanx digit 1

4. flexion of digit 1

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. anconeus

2. lateral epicondyle

3. olecranon process & posterior proximal ulna

4. extension at elbow

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. extensor carpi radialis longus

2. lateral supracondylar ridge

3. base of metacarpal 2

4. extension of hand

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. extensor carpi radialis brevis

2. lateral epicondyle 

3. base of metacarpal 3

4. extension of hand

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. extensor digitorum

2. lateral epicondyle

3. bases of middle and distal phalanges of digits 2-4

4. extension of hand & at MCP and IP joints

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. extensor digiti minimi

2. lateral epicondyle 

3. extensor expansion of digit 5

4. extension MCP & IP joints of digit 5

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. extensor carpi ulnaris

2. lateral epicondyle

3. base of metacarpal 5

4. extension of hand

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. supinator

2. lateral epicondyle, radial collateral , annular ligaments & supinator crest of ulna

3. anterior lateral surface of proximal 3rd radius

4. supination of forearm

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. abductor pollicis longus

2. posterior surface of ulna, radius & interosseous membrane

3. base of metacarpal 1

4. abduction of hand and digit 1

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. extensor pollicis longus

2. posterior surface of ulna and interosseous membrane

3. base of distal phalanx of digit 1

4. extension of digit 1 at IP joint

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. extensor pollicis brevis

2. posterior surface of radius and interosseous membrane

3. base of proximal phalanx of digit 1

4. extension of digit 1

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. abductor pollicis brevis

2. flexor retinaculum & trapezium

3. base of proximal phalanx of digit 1

4. abduction of digit 1

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. adductor pollicis

2. capitate, 2nd & 3rd metacarpal

3. base of proximal phalanx of digit 1

4. adduction of digit 1

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. opponens pollicis

2. flexor retinaculum & trapezium

3. lateral side of metacarpal 1

4. opposition of digit 1

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. flexor digiti minimi brevis

2. hook of hamate & flexor retinaculum

3. base of proximal phalanx of digit 5 & palmar surface

4. flexion of digit 5

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. abductor digiti minimi

2. pisiform & tendon of flexor carpi ulnaris

3. base of proximal phalanx of digit 5 & ulnar surface

4. abduction of digit 5

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. opponens digiti minimi

2. hook of hamate & flexor retinaculum

3. shaft of metacarpal 5 & ulnar surface

4. none

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. palmar interossei

2. base of metacarpals 1,2,4,5

3. base of proximal phalanx of related fingers & extensor aponeurosis

4. extension at IP joints

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. dorsal interossei

2. adjacent sides of all metacarpals

3. bases of proximal phalanges & extensor expansion of digit 2-4

4. extension IP joints

1. identify this muscle,

2. its origin(s),

3. its insertion(s),

4. action(s)

1. lumbricals

2. surfaces of flexor digitorum profundus tendons

3. extensor aponeurosis on dorsal surface of phalanges

4. extension at IP joints for digits 2-5

what does S.I.T.S. stand for and what muscle group does it represent?

Supraspinatus, Infraspinatus, Teres minor, & Subscapularis; rotator cuff muscles

______ is the agonist of muscular flexion; _____ is the antagonist

biceps; triceps

What functional group of muscle has the most motion at a joint, a.k.a. main character?

agonist/prime mover

What functional group of muscle works opposite to the agonist, a.k.a. villain?

antagonist

What functional group of muscle assists the agonist, a.k.a. supporting character?

synergist

What functional group of muscle stabilizes the joint and helps the agonist break the motion, a.k.a. the middle man?

fixators

attachment of a muscle to a bone that is generally anchored/ remains stationary when moving

origin (proximal attachment)

attachment of a muscle to a bone that moves the bones it’s attached to closer to the its proximal attachment?

insertion

what is one relationship between the pectoralis major and the latissimus dorsi?

they have a common insertion on the intertubercular sulcus

“cross your arms” muscle

pectoralis major

“swimmer muscle”

latissimus dorsi

_____ ______ is the synergist of latissimus dorsi for extension at shoulder

teres major

________ is the only rotator cuff muscle that inserts on lesser tubercule and originates on the anterior part of the scapula

subscapularis (O: subscapular fossa; I: lesser tubercule)

which 2 muscles have attachments to the inferior angle of the scapula?

teres major & latissimus dorsi

what are two muscles that attaches to the coracoid process?

pectoralis minor and coracobrachialis

which muscles inserts on the deltoid tuberosity?

deltoid

Which muscle originates on the lateral border of the dorsal sulcus, and inserts on the greater tubercule of the humerus?

teres minor

Which muscles originates from ribs 1 to 8 and inserts in the medial border of the scapula?

serratus anterior