Muscular System

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created 7 years ago by Wcc2014
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1

occipitofrontalis action

raises eyebrows

2

occipitofrontalis nerve supply

facial nerve

3

frontal belly action

raises eyebrows

4

frontal bell nerve supply

facial nerve

5

orbicularis oculi action

closes eye

6

zygomaticus major and minor action

raises lateral corners of mouth upward (smiling)

7

risorius action

draws corner of lip laterally (tenses lip)

8

levator labii superioris action

opens lips

9

depressor labii inferioris

draws lips inferiorly

10

depressor anguli oris

draws corner of mouth down and laterally (grimace)

11

orbicularis oris action

closes lip (kissing, purses)

12

mentalis action

wrinkles chin

13

buccinators action

compress check (sucking and blowing)

14

platysma action

tenses skin of neck

15

orbicularis oculi nerve supply

facial nerve

16

zygomaticus major and minor nerve supply

facial nerve

17

risorius nerve supply

facial nerve

18

levator labii superioris nerve supply

facial nerve

19

depressor labii inferioris nerve supply

facial nerve

20

depressor anguli oris nerve supply

facial nerve

21

orbicularis oris nerve supply

facial nerve

22

mentalis nerve supply

facial nerve

23

buccinators nerve supply

facial nerve

24

platysma nerve supply

facial nerve

25

name the four muscles of chewing

masseter, temporalis, medial pterygoid, lateral pterygoid

26

masseter action

chewing, primer mover of jaw closure

27

temporalis action

chewing, closes jaw

28

medial pterygoid action

chewing, mandible side to side (grinding)

29

lateral pterygoid action

chewing, grinding moves of lower teeth

30

masseter nerve supply

trigeminal nerve

31

temporalis nerve supply

trigeminal nerve

32

medial pterygoid nerve supply

trigeminal nerve

33

lateral pterygoid nerve supply

trigeminal nerve

34

name the muscles used for tongue movements

genioglossus, hyoglossus, styloglossus

35

genioglossus action

protracts tongue

36

hyoglossus action

depress tongue

37

styloglossus action

retract and elevates tongue

38

genioglossus nerve supply

hypoglossal nerve

39

hyoglossus nerve supply

hypoglossal nerve

40

styloglossus nerve supply

hypoglossal nerve

41

sternocleidomastoid action

flexes and laterally rotates head. tilts head to opposite side. both contraction produces neck flexion. one contraction tilts head to opposite side

42

sternocleidomastoid description

fleshy parts on either side of the neck

43

sternocleidomastoid origin

manubrium of sternum and medical portion of clavicle

44

sternocleidomastoid insertion

mastoid process of temporal bone and superior nuchal line of occipital bone

45

sternocleidomastoid nerve supply

accessory nerve (cranial nerve x)

46

scalenes origin

transverse processes of cervical vertebrae

47

scalenes insertion

anterolaterlly on first two ribs

48

scalenes action

elevate first to ribs

49

which muscle aids in inspiration

scalenes

50

scalense nerve supply

cervical spinal nerves