Extra Muscles Origins, Insertions, Actions, And Innervations

Front 1

pectineus origin

Back 1

surface of superior ramus of pubis ventral to pectin between the ilipectineal eminence and pubic tubercle

Front 2

pectineus insertion

Back 2

pectineal line of femur

Front 3

pectineus actions

Back 3

hip adduction and flexion

Front 4

pectineus peripheral innervation

Back 4

femoral nerve, accessory obturator nerve

Front 5

pectineus segmental innervation

Back 5

L2, L3, L4

Front 6

piriformis origin

Back 6

surface of the sacrum between 1-4th pelvic sacrum foramina, margin of greater sciatic foramen, and pelvic surface of sacrotuberous ligament

Front 7

piriformis insertion

Back 7

superior border of greater trochanter

Front 8

piriformis actions

Back 8

laterally rotates the extended hip, flexes the abducted hip, assists in hip extension, stabilizes the femoral head in the acetabulum

Front 9

piriformis peripheral innervation

Back 9

nerve to the piriformis

Front 10

piriformis segmental innervation

Back 10

L5, S1, S2

Front 11

plantaris origin

Back 11

distal part of lateral supracondylar line of femur and adjacent part of its popliteal surface, oblique popliteal ligament of knee joint

Front 12

plantaris insertion

Back 12

posterior part of calcaneus

Front 13

plantaris actions

Back 13

plantar flexion, assists in knee flexion

Front 14

plantaris peripheral innervation

Back 14

tibial

Front 15

plantaris segmental innervation

Back 15

L4, L5, S1, S2

Front 16

soleus origin

Back 16

posterior surfaces of head of fibula and proximal 1/3 of its body, soleal line, and middle 1/3 of medial border of tibia, and tendinous arch between tibia and fibula

Front 17

soleus insertion

Back 17

posterior part of calcaneus

Front 18

soleus actions

Back 18

talocrural plantar flexion, subtalar joint inversion (supination)

Front 19

soleus peripheral innervation

Back 19

tibial

Front 20

soleus segmental innervation

Back 20

L5, S1, S2

Front 21

popliteus origin

Back 21

anterior part of groove on lateral condyle of femur, and oblique popliteal ligament of knee joint

Front 22

popliteus insertion

Back 22

triangular area proximal to soleal line on posterior surface of tibia, and fascia covering the muscle

Front 23

popliteus actions

Back 23

non weight bearing: medial rotation of the tibia on the femur, knee flexion
weight bearing: femur on tibia and knee flexion, helps reinforce posterior ligament of knee joint

Front 24

popliteus peripheral innervation

Back 24

tibial

Front 25

popliteus segmental innervation

Back 25

L4, L5, S1

Front 26

quadratus plantae origin

Back 26

medial head: medial surface of calcaneus, and medial border of long plantar ligament
lateral head: latearl border of plantar surface of calcaneus, and lateral border of long plantar ligament

Front 27

quadratus plantae insertion

Back 27

lateral margin and dorsal and plantar surfaces of tendon of flexor digitorum longus

Front 28

quadratus plantae actions

Back 28

modifies line of pull of the flexor digitorum longus tendons, and assists in flexion of the 2-5th digits

Front 29

quadratus plantae peripheral innervation

Back 29

lateral plantar

Front 30

quadratus plantae segmental innervation

Back 30

S1, S2

Front 31

subclavius origin

Back 31

1st rib and cartilage

Front 32

subclavius insertion

Back 32

undersurface of the clavicle

Front 33

subclavius actions

Back 33

draws the clavicle down and stabilizes joint

Front 34

subclavius peripheral innervation

Back 34

subclavian

Front 35

subclavius segmental innervation

Back 35

C5, C6

Front 36

pronator quadratus origin

Back 36

medial side, anterior surface of distal 1/4 of ulna

Front 37

pronator quadratus insertion

Back 37

lateral side and anterior surface of distal 1/4 of radius

Front 38

pronator quadratus action

Back 38

pronates the forearm

Front 39

pronator quadratus peripheral innervation

Back 39

median (anterior interosseus)

Front 40

pronator quadratus segmental innervation

Back 40

C7, C8, T1

Front 41

anconeus origin

Back 41

lateral epicondyle of the humerus, posterior surface

Front 42

anconeus insertion

Back 42

lateral side of olecranon process, upper 1/4 of posterior surface of the body of the ulna

Front 43

anconeus actions

Back 43

extends the elbow, stabilizes the ulna during pronation and supination

Front 44

anconeus peripheral innervation

Back 44

radial

Front 45

anconeus segmental innervation

Back 45

C7, C8

Front 46

serratus posterior superior origin

Back 46

ligamentum nuchae, spinous processes of C7, T1-3

Front 47

serratus posterior superior insertion

Back 47

upper borders, external surfaces of ribs 2-5

Front 48

serratus posterior superior actions

Back 48

elevates ribs during inspiration

Front 49

serratus posterior superior peripheral innervation

Back 49

intercostal

Front 50

serratus posterior superior segmental innervation

Back 50

T1-T4

Front 51

levatores costorum origin

Back 51

transverse processes of C7 and T1-T12

Front 52

levatores costorum insertion

Back 52

outer surface of rib between tubercle and angle (fiber direction-down and out)

Front 53

levatores costorum action

Back 53

raises the ribs

Front 54

levatores costorum peripheral innervation

Back 54

posterior rami of the corresponding thoracic spinal nerve

Front 55

levatores costorum segmental innervation

Back 55

T1-T12

Front 56

transversus abdominis origin

Back 56

inner surface of cartilages of lower 6 ribs, interdigitating with the diaphragm, thoracolumbar fascia, anterior 3/4 of