muscle origins/insertions/functions/innervations

Question 1

serratous anterior origin/insertion/function/innervation

Answer 1

origin- upper 9 ribs
insertion- medial border of scapula
function- protraction of scapula
innervation- long thoracic

Question 2

trapezius origin/insertion/function/innervation

Answer 2

origin- occipital bone
insertion - scapula
function- retraction
innervation- cranial nerve

Question 3

levator scapula origin/insertion/function/innervation

Answer 3

origin - transverse process
insertion- medial border of scapula
function- elevation and depression
innervation- nerves c3 and c4

Question 4

rhomboid minor/major origin/insertion/function/innervation

Answer 4

major
origin- spinous process
insertion- lower medial scapular border
minor
origin- ligamentum nuchae
insertion - medial border of scapula
function- elevate and retract
innervation- dorsal scapular nerve

Question 5

latissimus dorsi origin/insertion/function/innervation

Answer 5

origin- ilium, lumbar fascia, lumbar and lower thoracic vertebrae
insert- bicipital groove
function- extensor of arm
innervation - thoracodrsal nerve

Question 6

pec major origin/insertion/function/innervation

Answer 6

2 heads
clavicular head origin - middle of clavicle
costal head origin. - upper 6 costal cartilages
insertion - lateral lip of bicipital groove
function- adducts, flexes
innervation - medial and lateral pectoral nerves

Question 7

pec minor origin/insertion/function/innervation

Answer 7

origin- ribs 3-5
insertion - coracoid process
function - pull scapula up and forward
innervation - medial pectoral nerve

Question 8

deltiod origin/insertion/function/innervation

Answer 8

origin- lateral third of clavicle to acromion to lateral third of spine of scapula
insertion - v shaped roughness called deltoid tubercle
function- all - abductor
posterior - extend
medial - adductor
anterior - flex
innervation - axillary nerve

Question 9

teres major origin/insertion/function/innervation

Answer 9

origin- lower part of back of scapula
insertion - medial lip of bicipital groove
function - extend, adduct
innervation - Lower subscapular nerve

Question 10

rotar cuff muscles

Answer 10

subscapularis, supraspinatus, infraspinatus, teres minor

Question 11

subscapularis origin/insertion/function/innervation

Answer 11

origin- anterior surface of the scapula, subscapular fossa
insertion- lesser tubercle
function- medial rotator
innervation- subscapular nerve

Question 12

supraspinatus origin/insertion/function/innervation

Answer 12

origin- supraspinous fossa
insertion - top facet of the greater tubercle
function- abduction
insertion- suprascapular nerbe

Question 13

infraspinatus origin/insertion/function/innervation

Answer 13

origin- infraspinous fossa
insertion- middle facet of greater tubercle
function- laterally rotates
innervation - supra scapular nerve

Question 14

teres minor origin/insertion/function/innervation

Answer 14

origin- lower lateral border of scapula
insertion - inferior facet of the greater tubercle
function - lateral rotator
innervation - axillary nerve

Question 15

coracobrachialis origin/insertion/function/innervation

Answer 15

origin - tip of coracoid process
insertion - halfway down medial side of humerus
function- adductor
innervation- musculotaneous

Question 16

brachials origin/insertion/function/innervation

Answer 16

origin- flat surface of distal humerus
insertion- tubercle of the ulna
function - elbow flexor
innervation - musculotaneous

Question 17

biceps origin/insertion/function/innervation

Answer 17

two heads
long head origin- supraglenoid tubercle
short head origin - coracoid process
insertions - radial tubercle
function- flexor and supinator
innervation - muculotaneous

Question 18

triceps origin/insertion/function/innervation

Answer 18

3 heads
long head origin - infraglenoid tubercle
medial head origin - lower part of humerus
lateral head - proximal humerus
insertion - olecranon of ulna
function - extensor
innervation - radial nerve

Question 19

pronator teres origin/insertion/function/innervation

(PASS #1)

Answer 19

origin - medial epicondyle (CFO)
insertion- lateral side of the radius
function - pronates (in the name)
innervation- medial nerve

Question 20

flexor carpi radials origin/insertion/function/innervation

(FAIL #1)

Answer 20

origin - medial epicondyle (CFO)
insertion - base of metacarpals two and three
function- wrist flexor and abductor
innervation - medial nerve

Question 21

palmaris longus (useless) origin/insertion/function/innervation

(PASS #2)

Answer 21

origin- medial epicondyle (CFO)
insertion- palmar aponeurosis
function - weak wrist flexor
innervation - medial nerve

Question 22

flexor capri ulnaris origin/insertion/function/innervation

Answer 22

origin- medial epicondyle (CFO)
insertion - pisiform, hamate and the base of the 5th metacarpal
function- flexes, adducts
innervation- ulnar nerve

Question 23

flexor digitorum superficialis origin/insertion/function/innervation

Answer 23

origin- line running from the medial epicondyle to coronoid process
insertion- middle phalanx
function- flexion of wrist
innervation- median nerve

Question 24

flexor pollicis longus origin/insertion/function/innervation

Answer 24

origin- middle part of the radius
insertion - distal phalanx of the thumb
function- thumb flexor
innervation - median nerve

Question 25

flexor digitorum profundus origin/insertion/function/innervation

Answer 25

origin- proximal third quarter of ulnar shaft
insertion- base of distal phalanges
function- flex every joint they pass
innervation- ulnar nerve/median nerve

Question 26

pronator quadratus origin/insertion/function/innervation

Answer 26

origin- ulna
insertion- radius
function- pulls radius over ulna

Question 27

Bracioradialis origin/insertion/function/innervation

Answer 27

Origin- supracondylar range
Insertion - styloid process
Function - flexes
Innervation - radial nerve

Question 28

Extensor carpi radialis longus origin/insertion/function/innervation

Answer 28

Origin- lateral epicondyle
Insertion - base of 2nd metacarpal
Function- extend and abduct
Innervation - radial nerve

Question 29

Extensor carpi radials origin/insertion/function/innervation

Answer 29

Origin- lateral epicondyle
Insertion - base of third metacarpal
Function- extend and abduct
Innervation- radial nerve

Question 30

Extensor digitorm origin/insertion/function/innervation

Answer 30

Origin- lateral epicondyle
Insertion - flat tendons on distal phalanges of fingers
Function- extend wrist and all fingers
Innervation- radial nerve

Question 31

Extensor digiti minimi origin/insertion/function/innervation

Answer 31

Origin-
Insertion- distal phalanx of baby finger
Function- extends baby finger and wrist
Innervation - radial nerve

Question 32

Extensor carpi ulnaris origin/insertion/function/innervation

Answer 32

Origin- lateral epicondyle (CEO)
Insertion- base of metacarpal 5
Function- extend the wrist
Innervation- radial nerve

Question 33

Supinatior origin/insertion/function/innervation

Answer 33

Origin- radial notch
Insertion- lateral side of radius
Function- low resistance supination
Innervation - radial nerve

Question 34

Abductor pollicis longus origin/insertion/function/innervation

Answer 34

Origin-
Insertion- base of 1st metacarpal
Function- abduct pollicis longus
Innervation - radial nerve

Question 35

Extensor pollicis brevis origin/insertion/function/innervation

Answer 35

Origin-
Insertion- base of proximal phalanx of the thumb
Function- extend pollicis brevis
Innervation- radial nerve

Question 36

Extensor indicis origin/insertion/function/innervation

Answer 36

Origin- next to short extensor of the thumb
Insertion - extensor expansion of index finger
Function - extend indicis
Innervation - radial nerve

Question 37

Abductor pollicis brevis origin/insertion/function/innervation

Answer 37

Origin- scaphoid and adjoining flexor
Insertion - outside of proximal phalanx
Function - abductor of thumb
Innervation -recurrent branch of median nerve

Question 38

Flexor pollicis brevis origin/insertion/function/innervation

Answer 38

Origin- flex retinaculum and trapezium
Insertion - base of proximal phalanx
Function- flex thumb
Innervation - recurrent branch of median nerve

Question 39

Opponens pollicis origin/insertion/function/innervation

Answer 39

Origin- distal flexor retinaculum and trapezium
Insertion- side of metacarpal
Function- allows thumb to touch other fingers
Innervation - recurrent of median nerve

Question 40

Abductor digiti minimi origin/insertion/function/innervation

Answer 40

Origin- pisiform
Insertion- medial side of proximal phalanx
Function- abducts little finger
Innervation- ulnar nerve

Question 41

Flexor digiti minimi origin/insertion/function /innervation

Answer 41

Origin- hook of hamate
Insertion- lateral to abductor digiti minimi
Function - flexes little finger
Innervation- ulnar nerve

Question 42

Opponents digiti minimi origin/insertion/function/innervation

Answer 42

Origin- flexor retinaculum and hook of hamate
Insertion- medial side of metacarpal 5
Function- helps cup palm of the hand
Innervation - ulnar nerve

Question 43

Lumbricals origin/insertion/function/innervation

Answer 43

“WORMS”
Origin- thumb side of flexor digitourm profundity
Insertion- extensor expansion
Function- flex metacarpals
Innervation - medial 2 ulnar
- lateral 2 median

Question 44

Adductor pollicis origin/insertion/function/innervation

Answer 44

Origin-trapezoid
Insertion- sesamoid bone
Function- adducts the thumb
Innervation- ulnar

Question 45

Palmar interossei (3) origin/insertion/function/innervation

Answer 45

Origin- axial side of metacarpals
Insertion- own digits
Function- adduct fingers
Innervation- ulnar

Question 46

Dorsal interossei origin/insertion/function/innervation

Answer 46

Origin- 4 spaces between metacarpals
Insertion- extensor expansion
Function- flex/extend fingers
Innervation- ulnar nerve