Posterior Triangle; Root of neck Flashcards Preview

Anatomy Final > Posterior Triangle; Root of neck > Flashcards

Flashcards in Posterior Triangle; Root of neck Deck (37):
1

Identify 

Mastoid process 

2

Identify 

Styloid process 

3

What bone lies anterior in the neck and is suspended 

Hyoid bone 

4

Identify 

Platysma 

5

origin and insertion of platysma 

O: Inferior border of mandible

I: Deltopectoral fascia 

6

Innervation and action of platysma 

N: Facial Nerve (CN VII)

A: Draws skin of neck superiorly and corners of mouth inferiorly 

7

Identify 

Sternocleidomastoid 

8

Origin and insertion of sternocleidomastoid 

O: Manubrium & Medial 1/3 of clavicle 

I: Mastoid process 

9

Innervation and action of sternocleidomastoid

N: spinal accessory n (CN XI)

A: Unilateral: lateral flexion; contralateral rotation

Bilat: Inferior flexion & Superior extension 

10

Borders of anterior triangle of neck 

  • anterior border of sternocleidomastoid
  • inferior border of mandible
  • anterior midline of neck 

11

Borders of posterior triangle of neck 

  • posterior border of sternocleidomastoid
  • anterior border of trapezius
  • middle 1/3 of clavicle 

12

Name the origin and insertion of the scalene muscles 

O: Cervical transverse processes

I: anterior & middle: 1st rib

Posterior: 2nd rib 

13

What artery and plexus runs through the interscalene triangle 

subclavian artery

Brachial plexus 

14

Identify red and green 

red: longus capitis

green: Longus coli 

15

Origin and insertion of longus colli

O: upper thoracic and lower cervical vertebral bodies and middle cervical transverse processes

I: upper cervical vertebral bodies 

16

Origin and insertion of longus capitis

O: middle cervical transverse processes

I: occipital 

17

Innervation of longus colli and longus capitis

cervical anterior rami 

18

action of longus colli and longus capitis

a: both: flex neck

capitis: flex atlanto-occipital joint 

19

identify and "a" and black arrow 

a: common carotid

black arrow: subclavian artery 

20

Identify the blue and red arrow 

blue: thyrocervical trunk

red: internal thoracic a. 

21

Yellow and green arrow 

yellow: vertebral a.

green: costocervical trunk 

22

Name the three arteries coming off of the thyrocervical trunk

  • suprascapular
  • transverse cervical
  • inferior thyroid 

23

What makes up the venous angle 

  • subclavian vein (I;C)
  • internal jugular vein (A;B)
  • brachiocephalic vein (G;D)

24

Identify lymphatics at venous angle (a and e)

a: right lympathic duct

e: thoracic duct 

25

Where does the right recurrent laryngeal artery run?

from the vagus nerve under the right subclavian artery 

26

identify 

cervical sympathetic trunk 

27

Identify 

phrenic nerve 

  • lies on the anterior scalene muscle 

28

identify 

vagus nerve (CN X) 

29

1/100 people have rib development of the 7th cervical vertebrae. What is a possible complication?

cervical rib in the interscalene triangle can compress subclavian artery and inferior trunk of brachial plexus 

30

Name the 4 muscles of the posterior triangle

splenius capitis

levator scapulae

scalenes

inferior belly of omohyoid 

31

What arteries can you expect to find in the posterior triangle

  • transverse cervical a.
  • suprascapular s.
  • Distal subclavian a.
  • dorsal scapular a. 

32

Identify all arrows

black: external jugular vein

red: posterior auricular vein

green: posterior division of the retromandibular vein 

*drains into subclavian 

33

What lymph nodes run along the external jugular vein

superficial cervical lymph nodes

34

Nerves from the cervical plexus (C1-C4 anterior rami) that pass through the posterior triangle.  What innervation do they bring?

sensory (cutaneous innervation) 

35

Name the cervical plecus nerves of the posterior triangle that arise from the nerve point of the neck 

  • lesser occipital
  • great auricular
  • transverse cervical
  • supraclavicular 

36

The nerve point of the neck arises through what muscle

sternocleidomastoid 

37

What CN passes through the posterior triangle of the neck 

spinal accessory nerve (CN XI)