Muscles Of The Cadaver: Origins, Insertions, And Actions

Front 1

Sternocleidomastoid

Back 1

O: Manubrium and clavicle
I: Mastoid Process
A: Flexes neck

Hint 1

O:There are two origins

Front 2

Pectoralis major

Back 2

O: Sternum
I: Greater tubercle of humerus
A: Flexes shoulder

Hint 2

A: Shrug your shoulders
He looked skinny, but it made a major difference when he flexed

Front 3

Pectoralis minor

Back 3

O: Ribs 3-5
I: Coracoid process of scapula
A: Protracts shoulder

Hint 3

I: Attaches to "wing"
A: Same as Serratus anterior
Don't let you shoulders get you down because you're a minor

Front 4

Rectus Abdominus
(action only)

Back 4

A: Compresses abdomen

Hint 4

A: Suck it in

Front 5

External Oblique
(action only)

Back 5

A: Compresses abdomen

Hint 5

A: Same as Rectus Abdominus

Front 6

Internal Oblique
(action only)

Back 6

A: Compresses abdomen

Hint 6

A: Same as Rectus Abdominus

Front 7

Serratus Anterior
(action only)

Back 7

A: Protracts shoulder

Hint 7

A: Same as Pectoralis minor
Don't flip out with a serrated knife because your shoulders got you down

Front 8

Biceps Brachii
(insertion and action)

Back 8

I: Radial tuberosity
A: Flexes elbow

Hint 8

I: _______ tuberosity
A: same as rest of anterior arm

Front 9

Brachialis
(action only)

Back 9

A: Flexes elbow

Hint 9

A: same as rest of anterior arm

Front 10

Brachioradialis
(action only)

Back 10

A: Flexes elbow

Hint 10

A: same as rest of anterior arm

Front 11

Pronator teres

Back 11

O: Medial epicondyle of humerus
I: Lateral radius
A: Pronates forearm

Hint 11

O: Same as all on anterior forearm, except Extensor digitorum profundus
The Pros will be rad later

Front 12

Flexor carpi radialis
(action only)

Back 12

A: Flexes wrist

Hint 12

A: The joint is distal to it

Front 13

Palmaris longus

Back 13

O: Medial epicondyle of humerus
I: Palmar Aponeurosis
A: Flexes wrist

Hint 13

O: Same as all on anterior forearm, except Extensor digitorum profundus
I: Part of name
A: The joint is distal to it

Front 14

Flexor carpi ulnaris

Back 14

O: Medial epicondyle of humerus
I: Base of 5th metacarpal
A: Flexes wrist

Hint 14

O: Same as all on anterior forearm, except Extensor digitorum profundus
I: Think of the side it's on
A: The joint is distal to it

Front 15

Flexor digitorum superficialis

Back 15

O: Medial epicondyle of humerus
I: Middle phalanges of digits 2-5
A: flexes fingers

Hint 15

O: Same as all on anterior forearm, except Extensor digitorum profundus
I: Above knuckle
A: Look at name!

Front 16

Flexor digitorum profundus

Back 16

O: Medial ulna
I: Distal phalanges of digits 2-5
A: Flexes fingers

Hint 16

O: Same side as others, but lower bone
I: Where fingernails are
A: Look at name!

I have a profound dislike of my meddling aunt ulna

Front 17

Pronator Quadratus
(action only)

Back 17

A: Pronates forearm

Hint 17

A: Look at name and location

Front 18

Extensor carpi radialis longus

Back 18

O: Lateral humerus
I: 2nd metacarpal
A: Extends wrist

Hint 18

O: Only one on posterior forearm that is not on the lateral epicondyle of the humerus
I: Connected to index finger
A: Look at name and joint distal to it

Front 19

Extensor carpi radialis brevis

Back 19

O: Lateral epicondyle of humerus
I: 3rd metacarpal
A: Extends wrist

Hint 19

O: Same as rest on posterior forearm (except Extensor carpi radialis longus)
I: Next to Extensor carpi radial longus insertion
O: Look at name and joint distal to it

Front 20

Extensor digitorum

Back 20

O: Lateral epicondyle of humerus
I: Phalanges of digits 2-5
A: Extend digits 2-5

Hint 20

O: Same as rest on posterior forearm (except Extensor carpi radialis longus)
I: Fingers
A: Look at name

Front 21

Extensor digiti minimi
(action only)

Back 21

A: Extends little finger

Hint 21

A: Look at name

Front 22

Extensor carpi ulnaris
(action only)

Back 22

A: Extends wrist

Hint 22

A: Look at name and joint distal to it

Front 23

Abductor pollicis longus
(action only)

Back 23

A: Abducts thumb

Hint 23

A: Look at name

Front 24

Extensor pollicis brevis
(action only)

Back 24

A: Extends thumb

Hint 24

A: Look at name

Front 25

Supinator
(action only)

Back 25

A: Supinates forearm

Hint 25

A: Look at name and location

Front 26

Sartorius
(origin and action only)

Back 26

O: Anterior superior iliac spine
A: Flexes hip

Hint 26

O: Front, top pokey part
A: Same as Pectinius and Iliopsoas

Front 27

Pectinius
(action only)

Back 27

A: Flexes hip

Hint 27

A: Same as Sartorius and Iliopsoas

Front 28

Iliopsoas
(action only)

Back 28

A: Flexes hip

Hint 28

A: Same as Sartorius and Pectinius

Front 29

Rectus Femoris

Back 29

O: Superior inferior iliac spine
I: Tibial tuberosity
A: Extends knee

Hint 29

O: Inferior to Sartorius origin
I: Same as Vastus group
A: Same as Vastus group

Front 30

Vastus lateralis

Back 30

O: Proximal half of linea aspera
I: Tibial tuberosity
A: Extends knee

Hint 30

O: Top half of front of femur
I: Same as Rectus femoris and other Vastuses
A: Same as Rectus femoris and other Vastuses

Front 31

Vastus medialis

Back 31

O: Entire length of linea aspera
I: Tibial tuberosity
A: Extends knee

Hint 31

O: Entire front of femur
I: Same as Rectus femoris and other Vastuses
A: Same as Rectus femoris and other Vastuses

Front 32

Vastus intermedius

Back 32

O: Distal half of linea aspera
I: Tibial tuberosity
A: Extends knee

Hint 32

O: Bottom half of front of femur
I: Same as Rectus femoris and other Vastuses
A: Same as Rectus femoris and other Vastuses

Front 33

Tensor fascia lata
(action only)

Back 33

A: Tenses fascia lata

Hint 33

A: Look at name

Front 34

Gracilis
(action only)

Back 34

A: Adducts hip

Hint 34

A: Same as rest of medial thigh

Front 35

Adductor longus
(action only)

Back 35

A: Adducts hip

Hint 35

A: Same as rest of medial thigh

Front 36

Adductor magnus
(action only)

Back 36

A: Adducts hip

Hint 36

A: Same as rest of medial thigh

Front 37

Tibialis anterior
(action only)

Back 37

A: Dorsiflexes ankle

Hint 37

A: Toes to sky

Front 38

Extensor hallucis longus
(action only)

Back 38

A: Extends big toe

Hint 38

A: Look at name

Front 39

Extensor digitorum longus
(action only)

Back 39

A: Extends toes 2-5

Hint 39

A: Look at name

Front 40

Fibularis longus
(action only)

Back 40

A: Plantar flexion of ankle

Hint 40

A: Same as Gastrocnemius and Soleus

Front 41

Trapezius

Back 41

O: Occipital bone
I: Scapular spine and acromion process
A: Elevates scapula

Hint 41

O: Back of head
I: Wings and arm insert
A: Lift your wings

Front 42

Deltoid

Back 42

O: Clavicle and scapula
I: Deltoid tuberosity
A: Abducts shoulder

Hint 42

O: Front and back
I: Named for it
A: Same as Supraspinatus (Chicken dance move)

Front 43

Latissimus dorsi
(action only)

Back 43

A: Extends shoulder

Hint 43

A: Same as Teres major
If you don't make the extension to the count of 3, you'll be late (latissimus)

Front 44

Supraspinatus
(action only)

Back 44

A: Abducts shoulder

Hint 44

A: Same as Deltoid (Chicken dance move)
Supra spine and his robot assistant Deltoid saved the abducted shoulder

Front 45

Infraspinatus
(action only)

Back 45

A: Laterally rotates shoulder

Hint 45

A: Circle out
Don't feel inferior because Laterally rotated you for a new guy

Front 46

Teres major
(action only)

Back 46

A: Extends shoulder

Hint 46

A: Same as Latissimus dorsi
Count to Tres slowly (extend the time)

Front 47

Rhomboideus major
(action only)

Back 47

A: Downward rotation of scapula

Hint 47

A: Wings down (opposite of Trapezius)
Shane was rotating his wings down when he pulled this muscle (cause he's an angel)

Front 48

Erector spinae
(action only)

Back 48

A: Erects spine

Hint 48

A: Look at name

Front 49

Triceps brachii
(insertion and action only)

Back 49

I: Olecrannon process
A: Extends elbow

Hint 49

I: Inserts into where it acts on
A: Opposite of Biceps brachii

Front 50

Gluteus maximus

Back 50

O: Iliac crest
I: Gluteal tuberosity
A: Laterally rotates hip

Hint 50

O: Butt wing
I: Named for it
A: Same as Piriformis (outward row)

Front 51

Gluteus medius
(action only)

Back 51

A: Medially rotates hip

Hint 51

A: Similar to Gluteus maximus and Piriformis, but name gives it away

Front 52

Piriformis
(action only)

Back 52

A: Laterally rotates hip

Hint 52

A: Same as Gluteus maximus

Front 53

Semitendonosus

Back 53

O: Ischial tuberosity
I: Tibial shaft
A: Flexes knee

Hint 53

O: Same as Semimembranosus (biblical-esque)
I: T
A: Same as rest of posterior thigh

Front 54

Semimembranosus

Back 54

O: Ischial tuberosity
I: Medial condyle of tibia
A: Flexes knee

Hint 54

O: Same as semitendonosus (biblical-esque)
I: M
A: Same as rest of posterior thigh

Front 55

Biceps femoris

Back 55

O: Ischial tuberosity and linea aspera
I: Lateral condyle of tibial and head of fibula
A: Flexes knee

Hint 55

O: Two origins (ones in front)
I: Two insertions (go together usually)
A: Same as rest of posterior thigh

Front 56

Gastrocnemius

Back 56

O: Femoral condyles
I: Calcaneus
A: Plantar flexion at ankle

Hint 56

O: Two bumps in back of knee
I: Heel bone
A: Same as Fibularis longus and Soleus

Front 57

Soleus
(action only)

Back 57

A: Plantar flexion at ankle

Hint 57

A: Same as Fibularis longus and Gastrocnemius