Cat/human Muscles, Origins, Insertions, Functions

Front 1

External Oblique

Back 1

O = Inferior eight ribs

I = Linea alba, iliac crest

F = Compress abdominal contents

Front 2

Internal Oblique

Back 2

O = Inguinal ligament, iliac crest, thoracolumbar fascia

I = Linea alba, cartilage of last four ribs

F = Compress abdomen

Front 3

Rectus Abdominis

Back 3

O = Pubic crest and symphysis

I = Xiphoid process, cartilage of 5 6 and 7

F = Compress abdomen

"5, 6, 7, xiphoid, abs from heaven right boy?"

Front 4

Transversus Abdominis

Back 4

O = Thoracolumbar fascia, iliac crest, inguinal ligament, carilage of 7-12

I = Xiphoid process, linea alba, pubic crest

F = Compress abdomen

Front 5

Xiphihumeralis

Back 5

NO HUMAN HOMOLOGUE

Located under pectoralis minor

Front 6

Pectoralis Minor

Back 6

O = Ribs 3, 4, and 5

I = Coracoid process of scapula

F = Forward rotation of scapula

Front 7

Pectoralis Major

Back 7

O = Clavicle, sternum, cartilage of 1-6

I = Greater tubercle, intertubercular groove

F = Adduction of humerus

"Clavicle, sternum, 1 through 6. Pectoralis Major gets the chicks."

Front 8

Pectoantebrachialis

Back 8

NO HUMAN HOMOLOGUE

Located above pectoralis major

Front 9

Serratus Ventralis (Anterior)

Back 9

O = First 9 ribs

I = Medial border of scapula

F = Lateral rotation of scapula

Front 10

Scalenes

Back 10

O = Transverse processes of cervical vertebrae

I = Ribs 1 and 2

F = Unilateral: flexion/rotation of cervical spine Bilateral: flexion of neck

Front 11

Sternocleidomastoid

Back 11

O = Anterior surface of manubrium, clavicle

I = Mastoid process, superior nuchal line

F = Neck flexion

Front 12

Sternohyoid

Back 12

O = Manubrium and clavicle

I = Hyoid bone

F = Depress hyoid bone

Front 13

Platysma

Back 13

O = Fascia of chest, deltoid

I = Mandible

F = Depress mandible

Front 14

Illiopsoas

Back 14

O = Illiac fossa/crest, lateral sacrum, transverse processes of T12 and lumbar vertebrae

I = Lesser trochanter (femur)

F = Flexes thigh

Front 15

Pectineus

Back 15

O = Pubis

I = Proximal end of femur

F = Flexes thigh

Front 16

Sartorius

Back 16

O = Anterior Superior Iliac Spine

I = Medial condyle of tibia

F = Flexes thigh

Front 17

Adductor Longus

Back 17

O = Pubis

I = Linea aspera

F = Flexes thigh

Front 18

Adductor Femoris (magnus and brevis)

Back 18

O = Magnus: Ischial/pubic rami, ischial tuberosity Brevis: Pubis

I = Magnus: Gluteal tuberosity, femur Brevis: Proximal femur

F = Flexes thigh

Front 19

Gracilis

Back 19

O = Inferior ramus and body of pubis

I = Medial surface of tibia

F = Adduction of thigh

Front 20

Rectus Femoris

Back 20

O = Anterior Inferior Iliac Spine, superior margin of acetabulum

I = Tibial tuberosity, patella

F = Extends knee

Front 21

Vastus Lateralis

Back 21

O = Greater trochanter, intertrochanteric line, linea aspera

I = Tibial tuberosity, patella

F = Extends knee

Front 22

Vastus Medialis

Back 22

O = Intertrochanteric line, linea aspera

I = Tibial tuberosity, patella

F = Extend knee

Front 23

Tensor Fasciae Latae

Back 23

O = Iliac crest, Anterior Superior Iliac Spine

I = Iliotibial tract

F = Flexes thigh

Front 24

Biceps Femoris

Back 24

O = Ischial tuberosity, linea aspera, distal femur

I = Head of fibula, lateral condyle of tibia

F = Extends thigh

Front 25

Semitendinosus

Back 25

O = Ischial tuberosity

I = Medial tibial shaft

F = Extends thigh

think M.T.S. for insertion

Front 26

Semimembranosus

Back 26

O = Ischial tuberosity

I = Medial condyle of tibia, medial condyle of femur

F = Extends thigh

think M.M. for insertion

Front 27

Iliotibial Tract

Back 27

Thickened part of fascia lata

Front 28

Gastrocnemius

Back 28

O = Medial and lateral condyles of femur

I = Calcaneus via calcaneal tendon

F = Plantar flexion

Front 29

Soleus

Back 29

O = Proximal portion of tibia and fibula

I = Calcaneus via calcaneal tendon

F = Plantar flexion

Front 30

Tibialis Anterior

Back 30

O = Lateral condyle/upper 2/3 of tibia

I = Inferior surface of 1st cuneiform and metatarsal 1

F = Dorsiflexion

Front 31

Extensor Digitorum Longus

Back 31

O = Lateral condyle of tibia, proximal portion of fibula

I = Middle and distal phalanges 2-5

F = Dorsiflexion

Front 32

Peroneus Longus

Back 32

O = Lateral condyle of tibia and top half of tibia

I = First metatarsal

F = Plantar flexion, eversion of foot

Front 33

Flexor Digitorum Longus

Back 33

O = Tibia

I = Phalanges 2-5

F = Flexion of phalanges 2-5

Front 34

Plantaris

Back 34

O = Femur

I = Calcaneus

F = Flexion of the foot

Front 35

Deltoid

Back 35

O = Clavicle, Acromion, Spine of scapula

I = Deltoid tuberosity

F = Abduction of humerus

Front 36

Trapezius

Back 36

O = Occipital bone, ligamentum nuchae, last cervical and spinous processes of thoracic vertebrae

I = Spine and acromion (clavicle) of scapula

F = Elevates, rotates, and depresses scapula

Front 37

Levator Scapulae Ventralis

Back 37

O = Transverse processes of C1-C4

I = Medial border of scapula

F = Elevates and adducts scapula

Front 38

Supraspinatus

Back 38

O = Supraspinous fossa

I = Greater tubercle of humerus

F = Abduction of humerus

Front 39

Infraspinatus

Back 39

O = Infraspinous fossa

I = Greater tubercle of humerus

F = Extension of humerus

Front 40

Latissimus Dorsi

Back 40

O = Lumbodorsal fascia, inferior angle of scapula

I = Intertubercular groove of humerus

F = adduction and rotation of humerus

Front 41

Rhomboideus

Back 41

O = Spinous processes of C7-T5

I = Medial border of scapula

F = Elevates scapula

Front 42

Splenius

Back 42

O = Spinous processes of C7-T6

I = Mastoid process, transverse process of C2-C4

F = lateral flexion of head

Front 43

Teres Major

Back 43

O = Posterior inferior angle of scapula

I = Intertubercular groove of humerus

F = adducts and medial rotates of humerus

Front 44

Subscapularis

Back 44

O = Subscapular fossa

I = Lesser tubercle of humerus

F = Medial rotation of humerus

Front 45

Gluteus Medius

Back 45

O = Illium

I = Greater trochanter of femur

F = Abducts thigh

Front 46

Gluteus Maximus

Back 46

O = Illium, sacrum, and coccyx

I = Gluteal tuberosity of femur and iliotibial tract

F = Thigh extension

Front 47

Caudofemoralis

Back 47

NO HUMAN HOMOLOGUE

Front 48

Long head of Triceps Brachii

Back 48

O = Inferior margin of glenoid cavity

I = Olecranon process of ulna

F = Extension of forearm

Front 49

Lateral and medial heads of Triceps Brachii

Back 49

O = Posterior humerus

I = Olecranon process of ulna

F = Extension of forearm

Front 50

Biceps Brachii

Back 50

O = Coracoid process

I = Radial tuberosity

F = Flexion of elbow

Front 51

Pronator Teres

Back 51

O = Medial epicondyle of humerus, coronoid process of ulna

I = Mid radial shaft

F = Pronate arm

"break PROcrastination pal, flex your extensor"

Front 52

Brachioradialis

Back 52

O = Distal end of humerus

I = Styloid process of radius

F = Forearm flexion

"BREAK procrastination pal, flex you extensor"

Front 53

Flexor Carpi Ulnaris

Back 53

O = Medial epicondyle of humerus, olecranon process of ulna

I = 5th metacarpal, pisiform and hamate

F = Flexion of wrist

Front 54

Palmaris Longus

Back 54

O = Medial epicondyle of humerus

I = Skin and fascia of palm

F = Flexion of wrist

"break procrastination PAL, flex your extensor"

Front 55

Extensor Carpi Ulnaris

Back 55

O = Lateral epicondyle of humerus, posterior border of ulna

I = 5th metacarpal

F = Extends wrist