Posterior Cervical Triangle Flashcards Preview

SP16 Anatomy Exam 2 > Posterior Cervical Triangle > Flashcards

Flashcards in Posterior Cervical Triangle Deck (59):
1

What are the 2 layers of fascia

superficial fascia
deep fascia

2

What is the type of tissue in the superficial fascia

subcutaneous tissue

3

what is the subcutaneous tissue comprised of

losse connective tissue and fat
and muscles of facial expression

4

what is the deep fascia

dense, organized connective tissue layer

5

what does the investing fascia of the neck surround

trapezius, SCM mm, and infrahyoid muscle

6

what does the pretracheal fascia surround?

thyroid, trachea and esophagus and posterior surface of the infrahyoid mm.

7

what does the buccopharyngea fascia surround

pharynx posteriorly

8

what is the alar fascia around?

anterior layer of prevertebral fascia and runs behind buccopharyngeal fascia

9

what are the components of the carotid sheath

column of fascia that surrounds the common carotid artery, internal carotid artery, IJV, and vagus nerve

10

what are the 5 layers of the fascia of the neck

pretracheal layer
carotid sheath
buccopharyngeal fascia
investing layer
prevertebral layer

11

what are the 4 facial spaces of the neck?

carotid sheath
pretracheal space
retropharyngeal space
prevertebral "danger" space

12

where does the carotid sheath run from?

skull down into middle mediastinum

13

where is the pretracheal space located?

trachea and infrahyoid mm

14

where does the pretracheal space run from?

thyroid cartilage down into anterior mediastinum

15

what layers of fascia is the retropharyngeal space located?

between buccopharyngeal and alar fascia

16

where does the retropharyngeal space run from

skull base down into superior mediastinum

17

why is the prevertebral space called the danger space?

infections can go from the skull all the way to T12

18

carotid sheath leads to?

middle mediastinum

19

pretracheal space leads to?

anterior mediastinum

20

retropharyngeal space leads to?

superior mediastinum

21

prevertebral space leads to?

posterior mediastinum

22

zone 1 of the neck is what

thoracic inlet to cricoid cartilage

23

zone 2 of the neck is what

cricoid cartilage to angle of mandible

24

zone 3 of the neck is what

angle of mandible to base of skull

25

what is the anterior border of the PCT?

SCM

26

what is the posterior border of PCT?

trapezius

27

what is the inferior border of the PCT?

middle 1/3 of the clavicle

28

what are the 6 contents of the PCT?

platysma m
EJV
cutaneous nn
motor nn
transverse cervical and suprascapular aa
deep muscles

29

what are the 4 cutaneous nerves of the PCT?

lesser occipital
greater auricular
transverse cervical
supraclavicular nn

30

where is Erb's point?

posterior border of SCM, 1/2 way down SCM

31

what does the lesser occipital n supply?

scalp at apex of triangle
C2-C3

32

what does the great auricular n supply?

C2-C3
supplies lobe and skin posterior auricularly

33

what does the transverse cervical n supply

C2-C3
supplies skin of anterior cervical triangle

34

what are the 3 branches of supraclavicular n

medial
intermediate
lateral

35

what does the supraclavicular nn supply?

skin of clavicular region
C3-C4

36

what are the 2 motor nerves of the posterior triangle

Accessory n XI
phrenic n C3-C5

37

where does CN XI accessory nerve emerge from

jugular foramen of skull

38

what does the accessory nerve supply?

both SCM and Trapezius

39

where does the phrenic nerve enter the thorax?

between subclavian v and a

40

what does the phrenic nerve supply?

diaphragam

41

phrenic n (c3-c5) and what other nerve share similar origins?

supraclavicular n (c3-c4)

42

what are the 3 vessels of the PCT?

EJV
transverse cervical a
suprascapular a

43

what does EJV drain into?

subclavian v

44

where does the transverse cervical artery and suprascapular artery come from?

thyrocervical trunk

45

what are the 3 main branches of the thyrocervical trunk?

suprascapular
transverse cervicial
inferior thyroid

46

what are the deep muscles of the PCT?

splenius capitis m
levator scapulae m
3 scalene m
omohyoid m (inferior belly)

47

what is the action of splenius capitis?

extend and laterally rotate head and neck

48

what is the splenius capitis innervated by

dorsal rami of spinal n

49

what is the action of levator scapulae muscle

elevate scapula

50

what is the levator scapulae innervated by

dorsal scapular n (C5)

51

what are the 3 scalene muscles

anterior scalene m
middle scalane m
posterior scalene m

52

where does the anterior scalene m originate from?

trans processes of C3-C6

53

where does middle scalene m originate from?

trans process of C2-C7

54

where does posterior scalene m originate from?

C4-C6

55

what are the scalene muscles actions?

acts to tilt neck laterally

56

what are teh scalane muscles innervated by?

ventral rami C3-C8

57

what is the interscalene triangle formed by?

anterior scalene, middle scalene, and 1st rib

58

what passes through the interscalene triangle?

brachial plexus and subclavian artery

59

what are some clinical notes to interscalene triangle?

- muscle slips, cervical ribs or cartilage outgrowths
- compress brachial plexus or subclavian a
- contribute to thoracic outlet syndrome (compromise of nn or aa between neck and axilla)