Gross 20 Posterior Cervical triangle Flashcards

1
Q

Superficial fascia vs Deep fascia
Density
Fat

A

Superficial: loose CT w/ fat
Deep: Dense, organized, No Fat

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2
Q

Investing fascia of the neck surrounds (3)

A

Trapezius
Sternoclydomastoid mm
Infrahyoid mm

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3
Q

Petracheal fascia of the neck surrounds (4)
Visceral (3)
Muscular (1)

A

Thyroid
trachea
esophagus
posterior infrahyoid (muscular)

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4
Q

Buccopharyngeal of the neck fascia surrounds (1)

A

Posterior pharynx

posterior portion of visceral pretrachel fascia

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5
Q

Alar fascia (neck): _______ layer of prevertebral fascia runs _____ buccopharyngeal fascia

A

Anterior layer of prevertebral fascia runs behind buccopharyngeal fascia

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6
Q

Carotid sheath surrounds (4)

A

CCA
ICA
IJV
Vagus n.

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7
Q

Carotid sheath

Between

A

Between SCM and prevertebral muscles

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8
Q

Carotid sheath Extends from _____ to _____

A

Skull to middle mediastinum

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9
Q

Pretracheal Space

Between

A

Between trachea and infrahyoid mm

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10
Q

Pretracheal space extends from ______ to _____

A

thryoid cartilage into anterior mediastinum

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11
Q

Retropharyngeal space

between

A

buchpharyngeal fascia and alar fascia

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12
Q

Retropharyngeal space extends from ___ to ___

A

skull base to superior mediastinum

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13
Q

Prevertebral space significance

Extends from ___ to ____

A

Danger space for infections

Extends from skull base to posteror mediastinum

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14
Q

Prevertebral space

between

A

alar fascia and prevertebral fascia

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15
Q

Zone I

A

thoracic inlet to cricoid cartilage

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16
Q

Zone II

A

cricoid cartilage to angle of mandible

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17
Q

Zone III

A

angle of mandible to base of skull

18
Q

Bifurcation of common carotid

A

CIII CIV

19
Q

Posterior Cervical triangle boundaries

A

Anterior: SCM
Posterior: trapezius
Inferior: middle 1/3 clavicle

20
Q

Contents of posterior cervical triangle (7)

A
Platysma
External jugular v
cutaneous nn (LO, GA, TC, SC)
motor nnv (accessory, phrenic)
transverse cervical aa
suprascaplular aa
deep muscles
21
Q

Cutaneous nerves

A

Lesser occipital
Greater auricular
Transverse cervical
supraclavicular

22
Q

Cutaneous nerve emergence

Relative to SCM

A

Deep to SCM at Erbs point

23
Q

Lesser occipital
Vertebral level
Supplies
Crosses

A

C2-C3
Supplies skin of scalp at apex of triangle
Crosses occipital artery

24
Q

Greater Auricular
vertebral level
Supplies
Runs with

A

C2-C3
Supplies lobe and skin posterior auricularly
Also angle of mandible to mastoid process
Runs with EJV

25
Q

Transverse cervical
Vertebral level
Supplies

A

C2-C3

Supplies skin of anterior cervical triangle

26
Q

Supraclavicular
Vertebral level
Supplies
Runs

A

C3-C4
Supplies sin of clavicular region
Superficial to clavical, deep to platysma

27
Q

Motor nerves of posterior triangle

A

Accessory n

Phrenic n

28
Q

Accessory nerve
Emerges from
Supplies

A

Emerges from jugular foramen

Supplies SCM and trapezius

29
Q

Phrenic nerve
Descends along ____
Crossed by 2 arteries
Enters thorax between

A

Descends along anterior scalene muscle
Crossed by transverse cervical and suprascapular aa.
Enters thorax between subclavian v and a

30
Q

EJV drains into

A

subclavian vein

31
Q

Suprascapular branch off of

A

thyrocervical trunk

32
Q

Transverse cervical branch off of

A

thyrocervical trunk

33
Q

Deep muscles of posterior triangle (4)

A

Splenius capitis
Levator scapulae
3 scalene mm
Omohyoid (inferior belly)

34
Q

Splenius capitis action

A

extend and laterally rotate head and neck

35
Q

Splenius capitis innervation

A

dorsal rami of spinal nn

36
Q

Levator scapulae

Innervation

A

Dorsal scapular n (C5)

37
Q

Scalene muscles
originate from
Action

A

Oroiginate from transverse processes

Tilt neck laterally

38
Q

Scalene muscles

innervation

A

Ventral rami C3-8

39
Q

Interscalene traingle

Borders

A

Anterior scalene
Middle scalen
1st rib

40
Q

Interscalene triangle

Contents

A

Brachial plexus

Subclavian artery

41
Q

Thoracic outlet syndrome
What is it
What triangle

A

Compromise of nn or aa between neck base and axilla

Due to interscale triangle compression