Fascial Layer and Posterior Cervical Triangle Flashcards

(81 cards)

1
Q

Term: band of connective tissue surrounding a structure?

A

Fascia

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2
Q

What gives rise to potential tissue space and pathways, allowing for infection to spread more easily?

A

Fascia

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3
Q

Which is immediately deep to skin?

superficial/deep fascia

A

superficial

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4
Q

Which is comprised of loose connective tissue and fat?

superficial/deep fascia

A

superficial

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5
Q

Which is composed of dense, organized connective tissue and is devoid of fat?

(superficial/deep fascia)

A

deep

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6
Q

Which envelops most body structures deep to skin and sub-cutaneous tissue?

(superficial/deep fascia)

A

deep

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7
Q

How many deep fascial layers of the neck are there?

Name them.

A
  1. Investing fascia
  2. Pretrachael fascia and buccopharyngeal fascia
  3. Alar fascia an dprevertebral fascia
  4. Carotid Sheath
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8
Q

Which deep fascial layer of the neck is the outermost layer?

A

investing fascia

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9
Q

Investing fascia surrounds _____

A

trapezius, SCM, infrahyoid mm

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10
Q

Pretrachael fascia surrounds _____

A

thyroid, trachae, esophagus, posterior surface of infrahyoid mm

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11
Q

Buccopharyngela fascia surrounds ____

A

posterior pharynx

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12
Q

Alar fascia is between which two deep fascial layers of the neck?

A

Alar fascia is anterior layer of prevertebral fascia

Runs behind the buccopharyngeal fascia

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13
Q

Prevertebral fascia surrounds ____

A

prevertebral and deep back muscles

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14
Q

Carotid sheath is a column of fascia surrounding _____

A

common carotid artery, internal carotid artery, internal jugular vein, CN X (vagus)

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15
Q

Which 2 vertebral layers are associated with each other?

A

pretrachael fascia and buccopharyngeal fascia

alar fascia and prevertebral fascia

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16
Q

What are the 4 fascial spaces in the neck?

A
  1. Carotid Sheath
  2. Pretrachael Space
  3. Retropharyngeal Space
  4. PRevertebral Space
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17
Q

The carotid sheath space is between ___ and ___

A

between SCM and prevertebral mm

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18
Q

The carotid sheath space is formed from ____

A

condensation of deep cervical fascia (all 4 layers)

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19
Q

The carotid sheath space encases ____

A

carotid aa., internal jugular v., CN X vagus

external carotid a. leaves carotid sheath at bifurcation to supply face

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20
Q

Infections in the carotid sheath can spread from ___ to ___

A

from skull down to middle mediastinum

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21
Q

Pretracheal space is between __ and __

A

trachae and infrahyoid mm

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22
Q

Infections in the pretrachael space can spread from ___ to___

A

trachae cartilage to anterior mediastinum

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23
Q

Retropharyngeal space is found between ___ and ___

A

buccopharyngeal fascia and alar fascia

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24
Q

Infections in retropharyngeal space can spread from __ to __

A

skull to superior mediastinum

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25
In which fascial space can pharyngeal perforation take place?
Retropharyngeal space pharyngeal perforation is caused by plugging your nose while sneezing (pharynx bursts open)
26
Which fascial space is called the danger space?
prevertebral space
27
Prevertebral danger space is found between __ and __
alar fascia and prevertebral fascia
28
Infections in the prevertebral danger space can spread from __ to __
skull base to posterior mediastinum (T12) this is the entire length of the thoracic cavity, prone to infections!
29
Why is the prevertebral space known as the danger space?
it is notorious for inferior spread of infection from base of skull to posterior mediastinum
30
Describe zone 1 of the neck
Thoracic inlet to cricoid cartilage most inferior zone everything coming out of thoracic cavity going to head and upper limb
31
Describe zone 2 of neck
Cricoid cartilage to angle of mandible
32
Describe zone 3 of neck
Angle of mandible to base of skull
33
What are the 3 horizontal zones of the neck used for?
useful in clinical assessment of neck trauma
34
What are the borders of the posterior cervical triangle?
anterior: SCM posterior: trapezius m inferior: middle 1/3 of clavicle
35
Describe platysma muscle's location in relation to posterior cervical triangle
Very superficial, passes over SCM
36
Describe external jugular vein in relation to SCM
external jugular vein runs on the superficial surface of SCM runs vertically
37
What cutaneous nerves are found in the posterior cervical triangle?
1. lesser occipital nerve 2. great auricular nerve 3. transverse cervical nerve 4. supraclavicular nerve
38
All cutaneous nerves in posterior cervical triangle emerge at ____ (Where is this relative to SCM?)
Erb's point this is deep to SCM
39
What cervical levels are cutaneous nerves in posterior cervical triangle?
lesser occipital nerve, great auricular nerve and transverse cervical nerve are all C2-C3 Supraclavicular nerves are C3-C4
40
Describe lesser occipital nerve relative to SCM
Lesser occipital nerve runs superiorly along posterior border of SCM
41
Lesser occipital nerve crosses over a portion of _____
occipital artery
42
Lesser occipital nerve supplies ______
skin of scalp at the apex of the triangle (near the occipital region)
43
Describe great auricular nerve in relation to SCM
great auricular nerve ascends vertically on SCM surface
44
Great auricular nerve runs with ____
great auricular nerve runs with external jugular vein towards ear
45
Great auricular nerve supplies ____
ear lobe and skin posterior to auricle and angle of mandible and mastoid process
46
Describe transverse cervical nerve relative to SCM
transverse cervical nerve runs transversely across SCM
47
Transverse cervical nerve supplies ____
skin of anterior cervical triangle and lateral neck | separates from transverse cervical artery which heads posteriorly
48
Which of the 4 cutaneous nerves in the posterior cervical triangle has 3 main branches? What are they?
supraclavicular nerve has 3 main branches medial, intermediate, lateral (posterior)
49
Describe the course in which supraclavicular nerve runs
runs superficial to clavicle and deep to platysma
50
Supraclavicular nerve supplies ____
skin of clavicular region
51
What makes up the cervical plexus of cutaneous innervation in the region of the posterior cervical triangle?
all of the cutaneous nerves found within the posterior cervical triangle (lesser occipital n., great auricular n., transverse cervical n., supraclavicular nn)
52
All of the cutaneous nerves of the posterior triangle together make up _____
cervical plexus of cutaneous innervation
53
What motor nerves are found within the posterior cervical triangle?
accessory nerve and phrenic nerve
54
Accessory nerve emerges from ____
jugular foramen of the skull
55
How does accessory nerve run through posterior cervical triangle?
diagonally through triangle deep to investing fascia
56
Accessory nerve supplies ____
SCM and trapezius muscle
57
Phrenic nerve is which cervical levels?
C3,4,5 KEEP ME BREATHING AND ALIVE
58
What muscle does phrenic n run over along it's course to the diaphragm?
descends vertically along anterior scalene muscle
59
Phrenic nerve is crossed anteriorly by ____
transverse cervical artery and suprascapular artery
60
Phrenic nerve enters the thorax between ___ and ___
subclavian artery and subclavian vein
61
Phrenic nerve travels along ___ to supply the diaphragm
pericardial sac
62
What 3 vessels are found within the posterior cervical triangle?
1. external jugular vein 2. transverse cervical artery 3. suprascapular artery
63
external jugular vein crosses ___ to enter posterior traingle
SCM
64
External jugular vein pierces ____ to drain into ____
pierces investing fascia to end in subclavian vein
65
Transverse cervical artery and suprascapular artery both branch off of ____
thyrocervical trunk
66
Do transverse cervical artery and nerve travel together?
NO
67
What is the course of transverse cervical artery?
after branching from thyrocervical trunk, transverse cervical artery passes laterally across the base of the triangle anterior to the anterior scalene muscle and brachial plexus
68
What is the course of suprascapular artery?
after branching from thyrocervical trunk, passes laterally to the lowest part of the triangle ends posterior to the clavicle
69
What are the deep muscles found in the posterior cervical triangle?
1. splenius capitis muscle 2. levator scapulae muscle 3. scale muscles (3) 4. omohyoid muscle, inferior belly
70
What is the action of splenius capitis muscle?
extends/laterally rotates head and neck
71
What is the innervation of splenius capitis muscle?
dorsal rami of spinal nn
72
What is the action of levator scapulae mm?
elevate the scapula
73
What is the innervation of levator scapulae m?
dorsal scapular n (C5)
74
What are the 3 scalene muscles?
anterior scalene m middle scalene m posterior scalene m
75
What is the difference between origin/insertion between the 3 scalene muscles?
anterior O: transverse process C3-6 --> I: 1st rib middle O: transverse process C2-7 --> I: 1st rib posterior O: transverse process C4-7 --> I: 2nd rib
76
What is the action of all of the scalene muscles?
tilt neck laterally
77
What is the innervation of the scalene muscles?
ventral rami C3-C8 nerves
78
What is the interscalene triangle formed by?
anterior scalene m middle scalene m 1st rib
79
Where is the scalene triangle relative to the posterior cervical triangle
interscalene triangle is elongated triangle deep to posterior cervical triangle
80
What passes through the interscalene triangle?
brachial plexus and subclavian artery
81
Subclavian vein passes anterior to ____
anterior scalene muscle