Anatomy Lab Practical #2 Muscles Of Human

Front 1

Mouth: Origin

Buccinator

Back 1

Alveolar processes of maxilla and mandible

Front 2

Mouth: Insertion

Buccinator

Back 2

blends into fibers of orbicularis oris

Front 3

Mouth: Action

Buccination

Back 3

compresses cheeks

Front 4

Mouth: Origin

Mentalis

Back 4

incisive fossa of mandible

Front 5

Mouth: insertion

Mentalis

Back 5

skin of chin

Front 6

Mouth: Action

Mentalis

Back 6

elevated and protrudes lower lip

Front 7

Eye: Origin

Orbicularis oculi

Back 7

medial margin of orbit

Front 8

Eye: insertion

Orbicularis oculi

Back 8

skin around eyelids

Front 9

Eye: action

Orbicularis oculi

Back 9

closes eye

Front 10

Mouth: origin

Orbicularis oris

Back 10

maxilla and mandible

Front 11

Mouth: insertion

Orbicularis oris

Back 11

lips

Front 12

Mouth: action

Orbicularis oris

Back 12

compresses, purses lips

Front 13

Scalp: Origin

Occipitofrontalis

Back 13

epicranial aponeurosis

Front 14

Scalp: insertion

Occipitofrontalis

Back 14

skin of eyebrow and bridge of nose

Front 15

Scalp: action

occipitofrontalis

Back 15

raises eyebrows, wrinkles forehead

Front 16

Scalp: Origin

Occipital belly

Back 16

Superior nuchal line

Front 17

Scalp: insertion

Occipital belly

Back 17

epicranial aponeurosis

Front 18

scalp: action

Occipital belly

Back 18

tenses and retracts scalp

Front 19

Origin:

Masseter

Back 19

zygomatic arch

Front 20

insertion:

Masseter

Back 20

lateral surface and angle of mandibular ramus

Front 21

action:

Masseter

Back 21

elevated mandible and closes jaws

Front 22

Origin:

Temporalis

Back 22

along temporal lines of skull

Front 23

insertion:

Temporalis

Back 23

coronoid process of mandible

Front 24

action:

Temporalis

Back 24

elevated mandible and closes jaws

Front 25

throat: origin

Digastric
(Anterior belly)

Back 25

from inferior surface of mandible at chin

Front 26

throat: insertion

Digastric
(Anterior belly)

Back 26

hyoid bone

Front 27

throat: action

Digastric
(Anterior belly)

Back 27

depresses mandible, opening mouth and/or elevated larynx

Front 28

Thorat: origin

Geniohyoid

Back 28

medial surface of mandible at chin

Front 29

Thorat: insertion

Geniohyoid

Back 29

hyoid bone

Front 30

Thorat: action

Geniohyoid

Back 30

depresses mandible, opening mouth and/or elevated larynx and retracts hyoid bone

Front 31

Throat: Origin

Mylohyoid

Back 31

mylohyoid line of mandible

Front 32

Throat: insertion

Mylohyoid

Back 32

median connective tissue band that runs to hyoid bone

Front 33

Throat: action

Mylohyoid

Back 33

elevated floor of mouth, elevated hyoid bone and/or depresses mandible

Front 34

Throat: origin

Sternohyoid

Back 34

clavicle and manubrium

Front 35

Throat: insertion

Sternohyoid

Back 35

hyoid bone

Front 36

Throat: action

Sternohyoid

Back 36

depresses hyoid bone and larynx

Front 37

Throat: origin

sternocleidomastoid

(clavicular head)

Back 37

attaches to sternal end of clavicle

Front 38

Throat: insertion

sternocleidomastoid

(clavicular head)

Back 38

mastoid region of skull and lateral portion of superior nuchal line

Front 39

Throat: action

sternocleidomastoid

(clavicular head)

Back 39

together, they flex the neck; alone one side bends neck toward shoulder and turns face to opposite side

Front 40

Throat: origin

sternocleidomastoid

(sternal head)

Back 40

attaches to manubrium

Front 41

Throat: insertion

sternocleidomastoid

(sternal head)

Back 41

mastoid region of skull and lateral portion of superior nuchal line

Front 42

Throat: action

sternocleidomastoid

(sternal head)

Back 42

together, they flex the neck; alone one side bends neck toward shoulder and turns face to opposite side

Front 43

Throat: origin

Thyrohyoid

Back 43

thyroid cartilage of larynx

Front 44

Throat: insertion

Thyrohyoid

Back 44

hyoid bone

Front 45

Throat: action

Thyrohyoid

Back 45

elevates larynx, depresses hyoid bone

Front 46

Origin:

External intercostals

Back 46

inferior border of each rib

Front 47

insertion:

external intercostals

Back 47

superior border of more inferior rib

Front 48

action:

external intercostals

Back 48

elevate ribs

Front 49

origin:

internal intercostals

Back 49

superior border of each rib

Front 50

insertion:

internal intercostals

Back 50

inferior border of the more superior rib

Front 51

action:

internal intercostals

Back 51

depress ribs

Front 52

origin:

pectoralis major

Back 52

cartilages of ribs 2-6, body of sternum, and inferior, medial portion of clavicle

Front 53

insertion:

pectoralis major

Back 53

crest of greater tubercle and lateral lip of intertubercular groove of humerus

Front 54

action:

pectoralis major

Back 54

flexion, adduction, and medial rotation at shoulder

Front 55

origin:

pectoralis minor

Back 55

anterior surfaces and superior margins of ribs 3-5

Front 56

insertion:

pectoralis minor

Back 56

coracoid process of scapula

Front 57

action:

pectoralis minor

Back 57

depresses and protracts shoulder, rotates scapula so glenoid cavity moves inferiorly (downward rotation); elevated ribs if scapula is stationary

Front 58

Origin:

seratus anterior

Back 58

anterior and superior margins of ribs 1-8 or 1-9

Front 59

insertion:

seratus anterior

Back 59

anterior surface of vertebral border of scapula

Front 60

action:

seratus anterior

Back 60

protracts shoulder; rotates scapula so glenoid cavity moves superiorly (upward rotation)

Front 61

Origin:

subclavius

Back 61

first rib

Front 62

insertion:

subclavius

Back 62

clavicle (inferior border)

Front 63

action:

subclavius

Back 63

depresses and protracts shoulder

Front 64

Origin:

external oblique

Back 64

external and inferior borders of ribs 5-12

Front 65

insertion:

external oblique

Back 65

external oblique aponeuroses extending to linea alba and iliac crest

Front 66

action:

external oblique

Back 66

compresses abdomen; depresses ribs; flexes, laterally flexes or rotated vertebral column to the opposite side

Front 67

origin:

internal oblique

Back 67

thoracolumbar fascia and iliac crest

Front 68

insertion:

internal oblique

Back 68

inferior surfaces of ribs 9-12, costal cartilages 8-10, linea alba, and pubis

Front 69

action:

internal oblique

Back 69

compresses abdomen; depresses ribs; flexes, laterally flexes or rotated vertebral column to the opposite side but rotates vertebral column to same side

Front 70

origin:

transverse abdominus

Back 70

cartilages fascia and iliac crest

Front 71

insertion:

transverse abdominus

Back 71

linea alba and pubis

Front 72

action:

transverse abdominus

Back 72

compresses abdomen

Front 73

origin:

diaphragm

Back 73

xiphoid process, ribs 7-12 and associated costal cartilages, and anterior surfaces of lumbar vertebrae

Front 74

insertion:

diaphragm

Back 74

central tendinous sheet

Front 75

action:

diaphragm

Back 75

contraction expands thoracic cavity, compresses abdominopelvic cavity

Front 76

Origin:

Rectus abdominis

Back 76

superior surface of pubis around symphysis

Front 77

insertion:

rectus abdominis

Back 77

inferior surfaces of cartilages (ribs 5-7) and ziphoid process of sternum

Front 78

action:

rectus abdominis

Back 78

depresses ribs, flexes vertebral column and compresses abdomen

Front 79

origin:

trapezius

Back 79

occipital bone, ligamentum nuchae and spinous processes of thoracic vertebrae

Front 80

insertion:

trapezius

Back 80

clavicle and scapula (acromion and scapular spine)

Front 81

action:

trapezius

Back 81

depends on active region and state of other muscles; may elevate, retract, depress, or rotate scapula upward and/or clavicle; can also extend neck

Front 82

origin:

latissimus dorsi

Back 82

spinous process of inferior thoracic and all lumbar vertebrae, ribs 8-12, and thoracolumbar fascia

Front 83

insertion:

latissimus dorsi

Back 83

floor of intertubercular groove of the humerus

Front 84

action:

latissimus dorsi

Back 84

entension, and medial rotation at shoulder

Front 85

origin:

rhomboid major

Back 85

spinous processes of superior thoracic vertebrae

Front 86

insertion:

rhomboid major

Back 86

vertebral border of scapula from spine to inferior angle

Front 87

action:

rhomboid major

Back 87

adducts and performs downward rotation of the scapula

Front 88

origin:

supraspinatus

Back 88

supraspinous fossa of scapula

Front 89

inseriton:

supraspinatus

Back 89

greater tubercle of humerus

Front 90

action:

supraspinatus

Back 90

abduction at the shoulder

Front 91

origin:

infraspinatus

Back 91

infraspinous fossa of scapula

Front 92

insertion:

infraspinatus

Back 92

greater tubercle of humerus

Front 93

action:

infraspinatus

Back 93

lateral rotation at shoulder

Front 94

origin:

subscapularis

Back 94

subscapular fossa of scapula

Front 95

insertion:

subscapularis

Back 95

lesser tubercle of humerus

Front 96

action:

subscapularis

Back 96

medial rotation at shoulder

Front 97

origin:

teres major

Back 97

inferior angle scapula

Front 98

insertion:

teres major

Back 98

medial lip of intertubercular groove of humerus

Front 99

action:

teres major

Back 99

extension, adduction, and medial rotation at shoulder

Front 100

origin:

teres minor

Back 100

lateral border of scapula

Front 101

insertion:

teres minor

Back 101

greater tubercle of humerus

Front 102

action:

teres minor

Back 102

lateral rotation at shoulder

Front 103

origin:

deltoid

Back 103

clavicle and scapula (acromion and adjacent scapular spine)

Front 104

inseriton:

deltoid

Back 104

deltoid tuberosity of humerus

Front 105

action:

deltoid

Back 105

adduction and flexion at shoulder

Front 106

origin:

anconeus

Back 106

posterior surface of lateral humerus

Front 107

insertion:

anconeus

Back 107

lateral margin of olecranon and ulnar shaft

Front 108

action:

anconeus

Back 108

extension at elbow

Front 109

origin:

coracobrachialis

Back 109

coracoid process

Front 110

insertion:

coracobrachialis

Back 110

medial margin of shaft of humerus

Front 111

action:

coracobrachialis

Back 111

adduction and flexion at shoulder

Front 112

origin:

biceps brachii

(Short head)

Back 112

from the coracoid process

Front 113

insertion:

biceps brachii

(Short head)

Back 113

redial tuberosity

Front 114

action:

biceps brachii

(Short head)

Back 114

flexion at elbow and shoulder; supination

Front 115

origin:

biceps brachii

(long head)

Back 115

from the supraglenoid tebercle

Front 116

insertion:

biceps brachii

(long head)

Back 116

redial tuberosity

Front 117

action:

biceps brachii

(long head)

Back 117

flexion at elbow and shoulder; supination

Front 118

origin:

brachialis

Back 118

anterior, distal surface of humerus

Front 119

insertion:

brachialis

Back 119

lateral aspect of styloid process of raius

Front 120

action:

brachialis

Back 120

flexion at elbow

Front 121

origin:

triceps brachii

(long head)

Back 121

infraglenoid tubercle of scapula

Front 122

insertion:

triceps brachii

(long head)

Back 122

olecranon of ulna

Front 123

action:

triceps brachii

(long head)

Back 123

extenson at elbow and extension and adduction at the shoulder

Front 124

origin:

triceps brachii

(lateral head)

Back 124

superior, lateral margin of humerus

Front 125

insertion:

triceps brachii

(lateral head)

Back 125

olecranon of ulna

Front 126

action:

triceps brachii

(lateral head)

Back 126

extension at elbow

Front 127

origin:

triceps brachii

(medial head)

Back 127

posterior surface of humeris, inferior to radial groove

Front 128

insertion:

triceps brachii

(medial head)

Back 128

olecranon of ulna

Front 129

action:

triceps brachii

(medial head)

Back 129

extension at elbow

Front 130

origin:

brachioradialis

Back 130

ridge superior to the lateral epicondyle of humerus

Front 131

insertion:

brachioradialis

Back 131

lateral aspect of styloid process of radius

Front 132

action:

brachioradialis

Back 132

flexion at elbow

Front 133

origin:

flexor carpi radialis

Back 133

medial epicondyle of humerus

Front 134

insertion:

flexor carpi radialis

Back 134

bases of second and third metacarpal bones

Front 135

action:

flexor carpi radialis

Back 135

flexion and abduction at wrist

Front 136

origin:

flexor carpi ulnaris

Back 136

medial epicondyle of humerus; adjacent medial surface of olecranon and anteromedial portion of ulna

Front 137

insertion:

flexor carpi ulnaris

Back 137

pisiform bone, hamate bone, and base of fifth metacarpal bone

Front 138

action:

flexor carpi ulnaris

Back 138

flexion and adduction at wrist

Front 139

origin:

palmaris longus

Back 139

medial epicondyle of humerus

Front 140

insertion:


palmaris longus

Back 140

palmar sponeurosis and flexor retinaculum

Front 141

action:


palmaris longus

Back 141

flexion at wrist

Front 142

origin:

extensor carpi radialis longus

Back 142

lateral supracondylar ridge of humerus

Front 143

insertion:

extensor carpi radialis longus

Back 143

base of second metacarpal bone

Front 144

action:

extensor carpi radialis longus

Back 144

extension and abduction at wrist

Front 145

origin:

extensor carpi radialis brevis

Back 145

lateral epicondyle of humerus

Front 146

insertion:

extensor carpi radialis brevis

Back 146

base of third metacarpal bone

Front 147

action:

extensor carpi radialis brevis

Back 147

extension and abduction at wrist

Front 148

origin:

extensor carpi ulnaris

Back 148

lateral epicondyle of humerus; adjacent dorsal surface of ulna

Front 149

insertion:

extensor carpi ulnaris

Back 149

base of fifth metacarpal bone

Front 150

action:

extensor carpi ulnaris

Back 150

extension and adduction at wrist

Front 151

origin:

extensor digitorum

Back 151

lateral epicondyle of humerus

Front 152

insertion:

extensor digitorum

Back 152

posterior surfaces of the phalanges, digits 2-5

Front 153

action:

extensor digitorum

Back 153

extension at finger joints and wrist

Front 154

origin:

pronator teres

Back 154

medial epicondyle of humerus and coronoid process of ulna

Front 155

insertion:

pronator teres

Back 155

middle of lateral surface of radius

Front 156

action:

pronator teres

Back 156

pronates forearm and hand by medial rotation of radius at radioulnar joints, plus flexion at elbow

Front 157

origin:

Gluteus maximus

Back 157

lliac crest, posterior gluteal line, and lateral surface of ilium; sacrum, coccyx, and thoracolumbar fascia

Front 158

insertion:

Gluteus maximus

Back 158

lliotibial tract and gluteal tuberosity of femur

Front 159

action:

Gluteus maximus

Back 159

extension and lateral rotation at hip; helps stabilize the extended knee

Front 160

origin:

gluteus minumus

Back 160

lateral surface of ilium between inferior and anterior gluteal linea

Front 161

insertion:

gluteus minumus

Back 161

greater trochanter of femur

Front 162

action:

gluteus minumus

Back 162

abduction and medial rotation at hip

Front 163

origin:

gluteus medius

Back 163

anterior iliac crest, lateral surface of ilium between posterior and anterior gluteal lines

Front 164

insertion:

gluteus medius

Back 164

greater trochanter of femur

Front 165

action:

gluteus medius

Back 165

abduction and medial rotation at hip

Front 166

origin:

tensor fasciae latae

Back 166

lliac crest and lateral surface of anterior superior iliac spine

Front 167

insertion:

tensor fasciae latae

Back 167

lliotibial tract

Front 168

action:

tensor fasciae latae

Back 168

flexion and medial rotation at hip; tenses fasciae latae, which laterally supports the knee

Front 169

origin:

piriformis

Back 169

anterolateral surface of sacrum

Front 170

insertion:

piriformis

Back 170

greater trochanter of femus

Front 171

action:

piriformis

Back 171

lateral rotation and abduction at hip

Front 172

origin:

adductor longus

Back 172

inferior ramus of pubis, anterior to adductor brevis

Front 173

insertion:

adductor longus

Back 173

linea aspera of femur

Front 174

action:

adductor longus

Back 174

adduction, flexion, and medial rotation at hip

Front 175

origin:

gracilis

Back 175

inferior ramus of pubis

Front 176

insertion:

gracilis

Back 176

medial surface of tibia inferior to medial condyle

Front 177

action:

gracilis

Back 177

flexiom at knee, adduction and medial rotation at hip

Front 178

origin:

lliacus

Back 178

lliac fossa

Front 179

insertion:

lliacus

Back 179

femur distal to lesser trochanter, tendon fused with that of psoas major

Front 180

action:

lliacus

Back 180

flexion at hup and/or lumbar intervertebral joints

Front 181

origin:

biceps femoris

(long head)

Back 181

ischial tuberosity and linea aspera of femus

Front 182

insertion:

biceps femoris

(long head)

Back 182

head of fibula, lateral condyle of tibis

Front 183

action:

biceps femoris

(long head)

Back 183

flexion at knee; extension and lateral rotation at hip

Front 184

origin:

semimembranosus

Back 184

lshial tuberosity

Front 185

insertion:

semimembranosus

Back 185

posterior surface of medial condyle of tibia

Front 186

action:

semimembranosus

Back 186

flexion at knee; extenion and medial rotation at hip

Front 187

origin:

semitendinosus

Back 187

lschial tuberosity

Front 188

insertion:

semitendinosus

Back 188

proximal, medial surface of tibia near insertion of gracilis

Front 189

action:

semitendinosus

Back 189

flexion at knee, extension and medial rotation at hip

Front 190

origin:

sartorius

Back 190

anterior superior iliac spine

Front 191

insertion:

sartorius

Back 191

medial surface of tibia near tibial tuberosity

Front 192

action:

sartorius

Back 192

flexion at kneww, flexion and lateral rotation at hip

Front 193

origin:

rectus femoris

Back 193

anterior inferior iliac spine and superior acetabular rim of ilium

Front 194

insertion:

rectus femoris

Back 194

tibial tuberosity via quadeiceps tendon, patella and patellar ligament

Front 195

action:

rectus femoris

Back 195

extension at knee; flexion at hip

Front 196

origin:

vastus lateralis

Back 196

anterior and inferior to greater trochanter of femus and along linea aspera (proximal half)

Front 197

insertion:

vastus lateralis

Back 197

tibial tuberosity via quadriceps tendon, patella, and patellar ligament

Front 198

action:

vastus lateralis

Back 198

extension at knee

Front 199

origin:

vastus medialis

Back 199

entire length of linea aspera of femur

Front 200

insertion:

vastus medialis

Back 200

tibial tuberosity via quadriceps tendon, patella, and patellar ligament

Front 201

action:

vastus medialis

Back 201

extension at knee

Front 202

origin:

vastus intermedius

Back 202

anterolateral surface of femur and linea aspera (distal half)

Front 203

insertion:

vastus intermedius

Back 203

tibial tuberosity via quadriceps tendon, patella, and patellar ligament

Front 204

action:

vastus intermedius

Back 204

extension at knee

Front 205

origin:

tibialis anterior

Back 205

lateral condyle and proximal shaft of tibia

Front 206

insertion:

tibialis anterior

Back 206

base of first metatarsal bone and medial cuneiform bone

Front 207

action:

tibialis anterior

Back 207

dorsiflexion at ankle; inversion of foot

Front 208

origin:

triceps surae:

Gastrocnemius

(medial and lateral head)

Back 208

femoral condyles

Front 209

insertion:

triceps surae:

Gastrocnemius

(medial and lateral head)

Back 209

calcaneus via calcaneal tendon

Front 210

action:

triceps surae:

Gastrocnemius

(medial and lateral head)

Back 210

plantar flexion at ankle; flexion at knee

Front 211

origin:

soleus

Back 211

head and proximal shaft of fibula, and adjacent posteromedial shaft of tibia

Front 212

insertion:

soleus

Back 212

calcaneus via calcaneal tendon (with gastrocnemius)

Front 213

action:

soleus

Back 213

plantar flexion at ankle; postural muscle when standing

Front 214

origin:

flexor digitorum longus

Back 214

posteromedial surface tibia

Front 215

insertion:

flexor digitorum longus

Back 215

inferior surface of disal phalanges, toes 2-5

Front 216

action:

flexor digitorum longus

Back 216

flexion joints of toes 2-5; plantar flexes ankle; inverts foot

Front 217

origin:

extensor digitorum longus

Back 217

lateral condyle of tibia, anterior surface of fibula

Front 218

insertion:

extensor digitorum longus

Back 218

superior surfaces of phalanges, toes 2-5

Front 219

action:

extensor digitorum longus

Back 219

extension of toes 2-5; dorsiflexes ankle and everts foot