muscles of the body

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Frontalis - Raises eyebrows, wrinkles skin of forehead horizontally

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1

Frontalis - Raises eyebrows, wrinkles skin of forehead horizontally

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2

Occipitalis - Pulls scalp posteriorly

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3

orbicularis oculi- Closes eye, pulls skin around the eyes (as in blinking and winking)

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4

orbicularis oris- Closes and protrudes lips (as in puckering the lips for a kiss)

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5

buccinator- Manipulates food during chewing Expels air through pursed lips (as in blowing a trumpet)

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6

zygomaticus major- Pulls angle of mouth superiorly and laterally (as in smiling or laughing)

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7

zygomaticus minor - Raises lateral portion of upper lip to expose upper teeth (as in smiling)

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8

platysma- Lowers lower lip and opens mouth by depressing the mandible

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9

massester- Elevates the mandible The masseter is the prime mover of jaw closure

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10

temporalis - Elevates and retracts the mandible

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11

digastric- Depresses mandible Fixator of the hyoid bone during swallowing

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12

mylohyoid - Elevates hyoid bone and floor of mouth, assisting tongue to push food toward the pharynx

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13

sternohyoid- Depresses hyoid bone and larynx

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14

sternocleidomastoid- Bilateral (together) action: Flexes head (chin moves towards the chest) Unilateral (individual) action: Flex and rotate the head toward opposite side Accessory muscle of respiration

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15

scalenes: Bilateral action: Flexes head Elevate rib cage with vertebral column during forced inspiration

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16

anterior scalene- Unilateral action: Moves head laterally Accessory muscle of respiration

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17

middle scalene- Unilateral action: Moves head laterally Accessory muscle of respiration

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18

posterior scalene - Unilateral action: Moves head laterally Accessory muscle of respiration

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19

trapezius- Elevates the scapula Rotates scapula upward Extends head

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20

deltoid- Abducts the arm Secondarily flexes and extends arm

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21

latissimus dorsi- Adducts and extends the arm Rotates arm medially

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22

supraspinatus - Assists abduction of arm Holds the humerus and stabilizes the shoulder joint

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23

infraspinatus- Laterally rotates the humerus Stabilizes shoulder joint

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24

subscapularis - Adducts and rotates arm medially Stabilizes shoulder joint

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25

teres minor - Laterally rotates the humerus Stabilizes shoulder joint

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26

teres major- Adducts, extends and rotates arm medially

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27

levator scapulae- Elevates scapula

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28

rhomboid minor- Retracts scapula��

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29

rhomboid major- Retracts scapula

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30

splenius capitis- Extends the head Rotates the head to the same side as the contracting muscle

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31

pectoralis major -Flexes and adducts the arm Rotates arm medially

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32

pectoralis minor - Flexes and adducts the arm Rotates arm medially

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33

serratus anterior -Protracts scapula Assists in upward rotation of scapula

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34

diaphragm - Flattens to lower floor of thoracic cavity to increase volume and decrease pressure, thereby causing inspiration

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35

external intercostals - Elevates rib cage, spreading the ribs, assisting in inspiration

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36

internal intercostals- Depresses the rib cage, pulling ribs closer together, assisting in expiration

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37

external oblique - Flexes and laterally bends the trunk Compresses abdominal cavity

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38

internal oblique- Flexes and laterally bends the trunk Compresses abdominal cavity

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39

transverse abdominus- Compresses abdominal cavity

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40

rectus abdominus - Flexes the trunk, with the vertebral column fixed, compresses abdominal cavity

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41

biceps brachii- Flexes elbow Supinates forearm

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42

brachialis - Flexes elbow

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43

triceps brachii - Extends elbow

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44

pronator teres - Pronates forearm

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45

flexor carpi radialis - Flexes the wrist Abducts the hand

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46

palmaris longus - Flexes wrist Tenses dense connective tissue of palm

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47

flexor carpi ulnaris - Flexes the wrist Adducts the hand

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48

extensor carpi radialis longus - Extends the wrist Abducts the hand

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49

extensor carpi radialis brevis - Extends the wrist Abducts the hand

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50

extensor digitorum - Extends wrist Extends fingers

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51

extensor digiti minimi - Extends little finger

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52

extensor carpi ulnaris - Extends the wrist, Adducts the hand

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53

branchioradialis - Flexes elbow

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54

illiopsos- flexes thigh

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55

illiacus - Flexes the thigh and stabilizes thigh in standing

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56

psoas major - Flexes the thigh, laterally bends vertebral column

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57

sartorius - Flexes, abducts and laterally rotates the thigh; flexes the leg at the knee

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58

rectus femoris - Extends the knee and flexes the thigh

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59

vastus lateralis - Extend the knee, stabilize the patella

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60

vastus intermedius - Extends the knee

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61

vastus medialis - Extend the knee, stabilize the patella

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62

pectineus- Adducts, flexes and medially rotates the thigh

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63

adductor longus - Adducts, medially rotates and flexes the thigh

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64

adductor magnus - Adducts and medially rotates the thigh

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65

adductor brevis - Adducts, medially rotates and flexes the thigh

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66

gracilis - Adducts and medially rotates the thigh, flexes the leg

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67

biceps femoris- Extends the thigh, flexes the knee

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68

semitendinosus- Extends the thigh, flexes the knee

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69

semimembranosus - Extends the thigh, flexes the knee

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70

gluteus maximus - Extends, abducts and laterally rotates the thigh

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71

gluteus medius - Abducts and medially rotates the thigh Stabilizes pelvis while walking

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72

tensor fascia lata - Abducts, flexes and medially rotates the thigh

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73

tibialis anterior- dorsiflexes the foot, inverts the foot

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74

extensor digitorum longus - dorsiflexes the food, extends the toes

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75

extensor hallucis longus- dorsiflexes the foot, extends the great toe

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76

fibularis (peroneus) longus- everts the foot, plantar flexes the foot

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77

fibularis (peroneus) brevis- Everts the foot, plantar flexes the foot

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78

gastrocnemius- plantar flexes the foot, assists with flexing the knee

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79

soleus- plantar flexes the foot

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80

plantaris- plantar flexes the foot, assists with flexing the knee

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81

flexor digitorum longus- flexes the toes, stabilizes foot

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82

flexor hallucis longus- flexes the great toe

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