location, origin, insertion and action of major muscles

Question 1

sternocleidomastoid (location and action)

Answer 1

neck, flexes head side to side and rotates it

Question 2

spinalis (location)

Answer 2

core, closest to the spine

Question 3

longissimus (location)

Answer 3

core, second closest to the spine

Question 4

lnternal intercoastals (location)

Answer 4

between the ribs

Question 5

diaphragm (location)

Answer 5

flat, right beneath where the lungs should be

Question 6

rectus abdominis (location)

Answer 6

beneath the pactoralis, tummy

Question 7

external oblique (location)

Answer 7

besides the abs

Question 8

quadratus lumborum (location)

Answer 8

underneath the obliques

Question 9

deltoid (location, insertion, and action)

Answer 9

shoulder,
insertion at the deltoid tuberosity,
abducts arm

Question 10

pectoralis major (location, insertion, action)

Answer 10

chest
insertion at intertubercular groove of humerus
internal rotation and adduction of arm

Question 11

latissimus dorsi (location, insertion, action)

Answer 11

lower back
insertion at intertubercular groove of humerus

Question 12

teres major (location)

Answer 12

connecting the humerus to the scapula

Question 13

coracobrachialis (location, origin, action)

Answer 13

origin from coracoid process,
next to triceps
adducts arm

Question 14

supraspinatus (location, insertion)

Answer 14

origin from posterior of scapula,
insertion at greater tubercle of humerus

Question 15

infraspinatus (location, insertion)

Answer 15

origin from posterior of scapula,
insertion at greater tubercle of humerus

Question 16

teres minor ( location, insertion)

Answer 16

origin from lateral border of scapula
insertion at greater tubercle of humerus

Question 17

trapezius (location)

Answer 17

upper back and posterior neck

Question 18

rhomboideus major (origin, insetion)

Answer 18

origin at the spine of upper thoracic vertebrae
insertion at medial border of scapula

Question 19

levator scapulae (location)

Answer 19

slightly superior than the rhomboideus, similar origin and insertion

Question 20

serratus anterior (location)

Answer 20

superficial than the internal intercoastals, on outer and lateral surfaces of upper ribs

Question 21

bicep brachii (location)

Answer 21

lateral part humerus

Question 22

brachioradialis (location, action)

Answer 22

connecting the distal end of humerus with lateral radius
elbow flexor (especially when forearm is pronated)

Question 23

pronator teres (location, action)

Answer 23

from medial humerus to lateral radius
pronates forearm

Question 24

triceps brachii (insertion, action)

Answer 24

insertion at olecranon process of ulna
main extensor of the arm

Question 25

supinator (action)

Answer 25

supinates forearm

Question 26

flexor carpi radialis (location)

Answer 26

origin from medial epicondyle of humerus, inserting at thumb side

Question 27

flexor carpi ulnaris (location)

Answer 27

origin from medial epicondyle of humerus, inserting at pinky side

Question 28

extensor carpi ulnaris

Answer 28

origin from lateral epicondyle of humerus, inserting on pinky side

Question 29

extensor carpi radialis longus

Answer 29

origin from distal end of humerus, inserting on radius side

Question 30

sartorius (origin)

Answer 30

anterior superior iliac spine

Question 31

rectus femoris (insertion, action)

Answer 31

inserting at tibial tuberosity knee extension, hip flexion

Question 32

vastus lateralis (insertion, action)

Answer 32

insertion at tibial tuberosity knee extension

Question 33

vastus medialis (insertion, action)

Answer 33

inserting at tibial tuberosity knee extension

Question 34

psoas major (location)

Answer 34

origin from lumbar vertebrae inserting at lesser trochanter of femur

Question 35

iliacus (location)

Answer 35

from iliac fossa of ilium to lesser trochanter of femur

Question 36

gluteus maximus (action)

Answer 36

hip extension)

Question 37

gluteus medius (location)

Answer 37

deep than gluteus maximus, superficial to gluteus minimus

Question 38

gluteus minimus (location)

Answer 38

deep to gluteus maximus and medius

Question 39

tensor fascia latae (origin)

Answer 39

anterior superior iliac spine

Question 40

adductor brevis (location)

Answer 40

from pubis to linea aspera (superior to longus and magnus)

Question 41

adductor longus

Answer 41

from pubis to linea aspera (superior magnus)

Question 42

adductor magnus

Answer 42

from pubis to linea aspera (inferior to longus and brevis

Question 43

gracilis (location, action)

Answer 43

on the most medial side of the thigh, adducts hip

Question 44

semimembranosus (origin, action)

Answer 44

origin at ischial tuberosity (on medial side of thigh, covering semitendinosus a little) flexes knee, extends hip

Question 45

semitendinosus (origin, action)

Answer 45

origin at ischial tuberosity (deep to semimembranosus) flexes knee, extends hip

Question 46

bicep femoris (origin, action)

Answer 46

origin at ischial tuberosity extensor of hip, flexes knee

Question 47

tibialis anterior (location, action)

Answer 47

lateral to tibia dorsiflexes ankle

Question 48

extensor digitorum longus (location)

Answer 48

lateral to tibialis anterior

Question 49

gastrocnemius (location, action)

Answer 49

plantar flexion of ankle flexes knee

Question 50

tibialis posterior (location, action)

Answer 50

posterior surface of tibia (deep to gastrocnemius) plantar flexion at ankle

Question 51

popliteus (location)

Answer 51

side striped and superior to tibialis posterior (medially rotates leg)

Question 52

soleus (location, action)

Answer 52

plantar flexion of ankle

Question 53

flexor digitorum brevis ( location)

Answer 53

underfoot, to middle toes

Question 54

flexor hallucis brevis (location)

Answer 54

underfoot , to big toe