Muscles

Front 1

Masseter

Back 1

Origin: zygomatic arch and maxilla
Insertion :angle and ramus of mandible
Action: close jaw and elevate mandible

Front 2

Sternocleidomastoid

Back 2

Origin: Manubrium of sternum and medial portion of clavicle
Insertion: mastoid process of temporal bone and superior nuchal line of occiptial bone
Action: flex/rotate head

Front 3

Pectoralis major

Back 3

Origin: clavicle, sternum, cartilage of ribs 1-6 and aponeurosis of external oblique muscle
Action: prime mover of arm flexon: adducts, medially rotates. Pulls chest upward.

Front 4

serratus anterior

Back 4

origin: lateral aspect of ribs 1-8(or9)
Insertion: vertebral boarder of anterior surface of scapula
Action Moves scapula forward toward chest. rotates scapula. abduction and raising of arm

Front 5

Deltoid

Back 5

Origin: Lateral 1/3 of clavicle; acrmoion, and spine of scapula
Insertion; deltoid tuberosity of humerus
Action: Acting as a whole, prime mover of arm abduction. Can aid in flexion, extension and rotation of humerus.

Front 6

Diaphragm

Back 6

Origin:Inferior boarder of rib and sternum, costal cartillages of last six ribs and lumbar vertebrae
Insertion: centeral tendon
Action: prime mover of inspiration flattens on contraction, increasing vertical dimensions of thorax; increases intra abdominal pressure

Front 7

Rectis abdominis

Back 7

origin- pubis insertion- sternum, costal cartilage, and some ribs Action- flexes vert. column, supports and compresses abdominal viscera.

Front 8

trapezius

Back 8

Origin: Occipital bone: ligamentum nuchae; spines of c7 and all thoracic vertebrae
Insertion: acromion and spinous process of scapula
Action: stabilizes, raises, retracts and rotates the scapula. the superior fibers elevate, the middle fibers retract, and the inferior fibers depress the scapula. together the upper and lower fibers rotate the arm.

Front 9

latissimus dorsi

Back 9

Origin: Indirect attachment to spinous processes of lower six thoracic vertebrae, lumbar vertebrae, last 3 to 4 ribs and iliac crest
Insertion: Floor of intertubercular sulcus of humerus
Action: Prime mover of arm extension, adducts and medially rotates arm: depresses scapula, brings arm down in power stroke

Front 10

Rhomboid major

Back 10

Origin: spinous process of c2 and t1-t5
Insertion: medial boarder of scapula
Action: Pulls scapula medially stabilizes scapula, rotates glenoid cavity downward

Front 11

Triceps Brachii - medial head

Back 11

Origin:lower shaft humerus Insertion:olecranon of ulna Action:extend forearm

Front 12

Triceps Brachii - lateral head

Back 12

Origin:upper shaft humerus Insertion:olecranon of ulna Action:extend forearm

Front 13

Triceps Brachii - long head

Back 13

Origin:scapula Insertion:olecranon of ulna action:extend forearm

Front 14

Biceps Brachii long head

Back 14

Origin:glenoid rim Insertion:radial tuberosity Action:flex forearm

Front 15

Biceps Brachii short head

Back 15

Origin:coracoid process Insertion:radial tuberosity Action:flex forearm

Front 16

Gracilis

Back 16

Origin: Inferior margin of the pubic symphysis, inferior ramus of pubis, and adjacent ramus of ishium Insertion: Medial surface of tibial shaft, just posterior to sartoius Action: adducts thigh; flexes and medially rotates leg

Front 17

Quadriceps
Rectus femoris

Back 17

Origin: anterior iliac spine and superior margin of acetabulum
Insertion: tibial tuberosity oand patella
Action: extends knee and flexes thigh at hip

Front 18

Quadriceps
Vastus lateralis

Back 18

Origin: greater trochanter, intertrochanteric line, and linea aspera
Insertion: tibial tuberosity oand patella
Action: extends and stabilizes knee

Front 19

Quadriceps
Tensor fasciae latae

Back 19

Origin: Anterior aspect of iliac crest and anterior superior iliac spine
Insertion: Illotibial tract
Action: flexes, abducts, and medially rotates thigh

Front 20

gluteus maximus

Back 20

Origin: dorsal ilium, sacrum, and coccyx
Insertion: Gluteal tuberosity of femur and iliotibial tract
Action: extends and laterally rotates thigh, lower part: extends, laterally rotates thigh and assists in raising the trunk from a flexed position. also assists in adduction of the hip joint

Front 21

Hamstrings: Biceps femoris

Back 21

Origin- Long head: ischium, Short head: femur. Insertion- fibula and tibia Action- extends thigh at hip.

Front 22

Hamstrings: semitendinosus

Back 22

Origin: ischium tuberosity Insertion: medial aspect of upper tibial shaft Action: Flexes knee, extends thigh

Front 23

Hamstrings: semimembranosus

Back 23

Origin: ischium tuberosity Insertion: medial condyle of tibia. Lateral condyle of femur. Action: flexes knee, extends thigh, medially rotates leg

Front 24

Tibialis anterior

Back 24

Origin- Tibia
Insertion- By tendon into inferior surface of first cuneiform and metatarsal 1
Action- dorsiflexes and inverts foot. Supports arch of foot

Front 25

Gastrocnemius

Back 25

Origin: By 2 heads from medial and lateral condyles of femur.
Insertion: Calcaneus via calcaneal tendon
Action: plantar flexes and inverts foot, flexes knee

Front 26

Soleus

Back 26

Origin: Proximal portion of Fibula and tibia
Insertion: calcaneus via calcaneal tendon
Action: plantar flexes and inverts foot, important for locomotion

Front 27

Quadriceps Vastus Medialis

Back 27

Orign: Linea Aspera
Insertion: Patella and Tibial Tuberosity
Action: Extends Knee

Front 28

Sartorius

Back 28

Origin: Anterior superior illiac spine
Insertion: Medial Tibial Condyle
Action: Flexes, laterally rotates, and abducts hip; flexes and medially rotates knee

Front 29

external oblique

Back 29

The muscle where you put your hands in your pockets of a jacket

Front 30

diaphragm

Back 30

ORIGIN: rib cage & sternumINSERTION: central tendonACTION: inspiration

Front 31

brachioradialis

Back 31

ORIGIN: humerus INSERTION: ulna ACTION: flexes the elbow

Front 32

frontalis

Back 32

ORIGIN: epicranial aponeurisINSERTION: supraorbital margin ACTION: raises eyebrows

Front 33

Orbicularis oculi

Back 33

ORIGIN: ligaments around orbit INSERTION: around eyelid ACTION: closes the eyes

Front 34

Orbicularis oris

Back 34

ORIGIN: maxilla & mandible INSERTION: skin of the mouth ACTION: closes/opens lips, presses lips together

Front 35

Serratus anterior

Back 35

ORIGIN: ribs (1-8)INSERTION: scapula ACTION: protracts the scapula

Front 36

Sternocleidomastoid

Back 36

ORIGIN: clavicle & manubriumINSERTION: mastoid processACTION: flexes and rotates the head

Front 37

Temporalis

Back 37

ORIGIN: temporal fossa INSERTION: mandible ACTION: closes the lower jaw/chewing muscle

Front 38

Zygomaticus

Back 38

ORIGIN: zygomatic boneINSERTION: mouthACTION: raises corner of mouth (smile)

Front 39

extensor digitorum

Back 39

origin: lateral epicondyleinsertion: finger expansionactions: extension of hand, wrist, and fingers

Front 40

flexor carpi ulnaris

Back 40

origin: medial epicondyle and medial margin on olecranon of ulnainsertion: base of fifth metacarpalactions: flexion and extension on wrist

Front 41

sternohyoid

Back 41

origin: manubrium of sternuminsertion: hyoid boneactions: depresses hyoid

Front 42

Extensor digitorum longus muscle

Back 42

Dorsal surface; middle and distal phalanges of lateral four digits

Front 43

extensor carpi radialis longus

Back 43

ORIGIN

Lower third of lateral supracondylar ridge of humerus and lateral intermuscular septum

INSERTION Posterior base of 2nd metacarpal

ACTION Extends and abducts hand at wrist

Front 44

fibularis (peroneus) longus

Back 44

origin: Upper lateral shaft of fibula

insertion: first metatarsal [same insertion as Tibialis Anterior]

Front 45

HEART

Back 45

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