Set 7 Myology Flashcards Preview

NBCE Part 1 > Set 7 Myology > Flashcards

Flashcards in Set 7 Myology Deck (65):
1

what muscles of the face and tongue are innervated by CN VII?

orbicularis oris, zygomaticus, mentalis, orbicularis oculi, and buccinator

2

What is the innervation of genioglossus, hyoglossus, and styloglossus?

CN XII (hypoglossal)

3

What is the action of orbicularis oculi?

eyelid sphincter

4

What is the action of zygomaticus?

mouth angle back and up

5

What is the action of mentalis?

raises lower lip

6

What is the action of orbicularis oris?

contracts/protrudes lips

7

What is the action of buccinator?

compresses cheeks

8

What is the action of genioglossus?

protrudes tongue

9

What is the action of hyoglossus?

depresses tongue

10

What is the action of styloglossus?

retracts and elevates tongue

11

What are the origin/insertion of orbicularis oculi?

frontal bone and maxilla/eyelid

12

What are the origin/insertion of zygomaticus?

zygomatic bone and corner of mouth

13

What are the origin/insertion of mentalis?

mandible and chin

14

What are the origin/insertion of orbicularis oris?

maxilla and mandible/mouth

15

What are the origin/insertion of buccinator?

maxilla and mandible/orbicularis oris

16

What are the origin/insertion of genioglossus?

mandible/hyoid and tongue

17

What are the origin/insertion of hyoglossus?

hyoid and tongue

18

What are the origin/insertion of styloglossus?

temporal bone and tongue

19

What is the innervation of the muscles of mastication?

CN V Trigeminal

20

What are the muscles of mastication?

temporalis, masseter, medial pterygoid and lateral pterygoid

21

What is the action of temporalis?

elevate and retract jaw

22

What is the action of masseter?

elevate jaw

23

What is the action of medial pterygoid?

elevate and protract jaw

24

What is the action of lateral pterygoid?

protrudes jaw and depresses

25

What is the prime mover of jaw closure?

masseter

26

What is the origin and insertion of temporalis?

temporal bone and coronoid of mandible

27

What is the origin and insertion of masseter?

zygomatic arch and mandible

28

What are the muscles of the superficial neck?

platysma and SCM

29

What is the innervation of platysma and SCM?

CN VII

30

What is the action of platysma?

depresses lower lip and jaw

31

What is the action of SCM?

one side: ipsilateral flexion, contralateral rotaton both: flexion

32

What is the origin and insertion of SCM?

manubrium and clavicle/mastoid

33

What are the suprahyoid muscles?

digastric, stylohyoid, mylohyoid, geniohyoid

34

What is the innervation of digastric?

CN V and VII

35

What is the innervation of stylohyoid?

CN VII

36

What is the innervation of mylohyoid?

CN V

37

What is the innervation of geniohyoid?

C1 via CN XII

38

What is the function of digastric?

elevates hyoid, depresses jaw

39

What is the function of stylohyoid?

elevates and retracts hyoid

40

What is the function of mylohyoid?

elevates hyoid

41

What is the function of geniohyoid?

pulls hyoid anterior and up

42

What is the origin and insertion of digastric?

mandible and mastoid/hyoid

43

What are the infrahyoid muscles?

thyrohyoid, omohyoid, sternohyoid, sternothyroid (TOSS)

44

What is the innervation of omohyoid, sternohyoid, and sternothyroid?

C1-C3

45

What is the innervation of thyrohyoid?

C1 via CN XII

46

What is the function of sternohyoid?

depresses hyoid

47

What is the function of sternothyroid?

pulls thyroid cartilage down

48

What is the function of omohyoid?

depresses and retracts hyoid

49

What is the function of thyrohyoid?

depresses hyoid (and elevates thyroid cartilage)

50

What is the nickname for the infrahyoid muscles?

strap muscles

51

What is the general function of the infrahyoid muscles?

swalloing and speaking

52

What is the origin and insertion of sternohyoid?

manubrium and hyoid

53

What is the origin and insertion of sternothyroid?

manubrium and thyroid cartilage

54

What is the origin and insertion of omohyoid?

scapula and hyoid

55

What is the origin and insertion of thyrohyoid?

thyroid cartilage and hyoid

56

What is the innervation of longus colli?

primary rami C2-C8

57

What is the innervation of scalenus anterior?

primary rami C5-C8

58

What is the innervation of scalenus medius?

primary rami C3-C4

59

What is the innervation of scalenus posterior?

primary rami C5-C8

60

What is the action of longus colli?

one: lateral flexion both: flexes and rotates vertebrae

61

What is the action of the anterior and middle scalene?

one: lateral flexion elevates 1st rib, flexes and rotates vertebrae

62

What is the action of scalenus posterior?

one: lateral flexion elevates 2nd rib, flexes and rotates vertebrae

63

What muscle attaches to the anterior tubercle of atlas?

longus colli

64

What is the origin and insertion for the scalenes?

transverse process of the cervical and the first two ribs

65

What are the contents of the suboccipital triangle?

suboccipital nerve and vertebral artery