3. neck muscles Flashcards Preview

Anatomy 3402 - 2nd Half > 3. neck muscles > Flashcards

Flashcards in 3. neck muscles Deck (44):
1

Sternocleidomastoid origin and insertion

or.
- upper manubrium
- medial 1/3 of clavicle

in.
- mastoid process
- superior nuchal line

2

sternocleidomastoid action

neck
- lateral bend
- contralateral twist
- pull head forward

3

sternocleidomastoid innervation

accessory nerve and branches from C2 and C3

4

anterior triangle anterior and posterior boundries?

anterior
- median line of the neck

posterior
- anterior border of sternocleidomastoid

5

anterior triangle superior border and apex

superior
- inferior border of mandible

inferior
- at the jugular notch in the manubrium of the sternum

6

anterior triangle roof and floor

roof
- subcutaneous tissue containing platysma

floor
- pharynx, larynx, and thyroid gland

7

# of hyoid muscles

4 supra and 4 infra

8

suprahyoid muscles action

hyoid and larynx up and back
- important in closing the epiglottis and swallowing
- minor movement of mandible

9

infrahyoid muscles action

hyoid and larynx down and forward
(opposite to suprahyroid)

10

trunks of brachial plexus cross what region?
- other nerves in this area?

base of the posterior triangle

also with:
- dorsal scapular nerve
- scapular nerve
- long thoracic nerve

11

conclusion of 1981 spindle density study?

spindle density of muscles are highest from top to bottom
(head > neck > thumb > big toe > ankle .... )

12

posterior neck muscles
(superficial to deep)

trapezius

splenius capitus
splenius cervicus

oblique capittor sup. and inf.
longissimus capitus
semispinallis cervicus
rotatores
multifidus

13

splenius muscles origin and insertion

or.
- nuchal ligament
- spinous processes C7- T4

in.
splenius cervicus
- transverse process C1-4
splenius capitus
- mastoid process
- lateral portion of superior nuchal line

14

splenius muscles action

head and neck
- extension
- lateral bend
- ipsi-lateral twist (to side of muscle)

15

splenius muscle innervation

posterior roots of cervical spinal nerves

16

semispinalis capitus origin and insertion

or.
- transverse processes of C4 - T5

in.
- superior nuchal line

17

semispinalis capitus action

neck and head
- extension (main)
- ipsilateral twist (same side, only some)

18

semispinalis capitus innervation

posterior roots of cervical spinal nerves

19

why do neck and head muscles have high spindle fibres

big role in proprioception

20

deep anterior neck muscles

scalenes (ant. mid. post.)
longus colli
longus capitis

21

scalenes origin

ant.
- transverse processes C3-C6
mid.
- transverse processes C2-C7
post.
- transverse processes C4-C6

22

scalenes instertion

ant. and middle
- upper surface of rib 1

post.
- upper surface of rib 2

23

scalenes action

ant. and middle
- elevation of rib 1
- neck lateral bend

post.
- elevation of rib 2
- neck lateral bend

24

longus colli origin and insertion

or.
- fibres range from vertebral bodies of T3 to transverse processes of C3

in.
- fibres range from anterior body of C1 (atlas) to transverse process and vertebral bodies and vertebral body of C6

25

longus colli action

neck
- flexion
- lateral bend

26

longus colli innervation

C2-C6

27

"capitis" meaning

attaches to head

28

longus capitis origin and insertion

or.
- transverse processes of C3-C6

in.
- inferior surface of occipital bone, anterior to foramen magnum

29

longus capitis action

head flexion

30

longus capitis innervation

C1-C3

31

head flexion vs neck flexion

head
- move chin down wrt axis
chin
- flex cervical vertebrae

32

rectus capitus origin and insertion

or.
- atlas and axis

in.
- inferior surface of occipital bone

33

rectus capitis innervation

by branches of C1 and C2

34

platysma location

- embedded in superficial fascia across neck
- blends into muscle of the lower face

35

constrictor matrix

superior, middle, inferior constrictors

36

cervicogenic headache associated with

rectus capitis muscles (oblique capitis sup/inf)
- from cervical vert. of these muscles

37

pharyngeal muscles? midline?

salpingopharyngeus
palatopharyngeus
stylopharyngeus

- pharyngeal raphe

38

constrictor muscles anterior attachments

sup.
- mandible region
mid.
- hyoid bone
inf.
- thyroid cartilage and cricoid cartilage

39

constrictor muscles posterior attachments

pharyngeal raphe

40

constrictor muscles action

constrict pharynx

41

constrictor muscle innervation

vagus nerve

42

pharyngeal muscles origin and insertion

pharynx to pharyngeal wall

43

pharyngeal muscles action

elevate the pharynx

44

pharyngeal muscles innervation

stylopharyngeus
- glossopharygeal nerve

salpingopharyngeus and palatopharyngeus
- vagus nerve