Gross 20 Posterior Cervical triangle

Question 1

Superficial fascia vs Deep fascia
Density
Fat

Answer 1

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

Question 2

Investing fascia of the neck surrounds (3)

Answer 2

Trapezius
Sternoclydomastoid mm
Infrahyoid mm

Question 3

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

Answer 3

Thyroid
trachea
esophagus
posterior infrahyoid (muscular)

Question 4

Buccopharyngeal of the neck fascia surrounds (1)

Answer 4

Posterior pharynx

posterior portion of visceral pretrachel fascia

Question 5

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

Answer 5

Anterior layer of prevertebral fascia runs behind buccopharyngeal fascia

Question 6

Carotid sheath surrounds (4)

Answer 6

CCA
ICA
IJV
Vagus n.

Question 7

Carotid sheath

Between

Answer 7

Between SCM and prevertebral muscles

Question 8

Carotid sheath Extends from _____ to _____

Answer 8

Skull to middle mediastinum

Question 9

Pretracheal Space

Between

Answer 9

Between trachea and infrahyoid mm

Question 10

Pretracheal space extends from ______ to _____

Answer 10

thryoid cartilage into anterior mediastinum

Question 11

Retropharyngeal space

between

Answer 11

buchpharyngeal fascia and alar fascia

Question 12

Retropharyngeal space extends from ___ to ___

Answer 12

skull base to superior mediastinum

Question 13

Prevertebral space significance

Extends from ___ to ____

Answer 13

Danger space for infections

Extends from skull base to posteror mediastinum

Question 14

Prevertebral space

between

Answer 14

alar fascia and prevertebral fascia

Question 15

Zone I

Answer 15

thoracic inlet to cricoid cartilage

Question 16

Zone II

Answer 16

cricoid cartilage to angle of mandible

Question 17

Zone III

Answer 17

angle of mandible to base of skull

Question 18

Bifurcation of common carotid

Answer 18

CIII CIV

Question 19

Posterior Cervical triangle boundaries

Answer 19

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

Question 20

Contents of posterior cervical triangle (7)

Answer 20

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

Question 21

Cutaneous nerves

Answer 21

Lesser occipital
Greater auricular
Transverse cervical
supraclavicular

Question 22

Cutaneous nerve emergence

Relative to SCM

Answer 22

Deep to SCM at Erbs point

Question 23

Lesser occipital
Vertebral level
Supplies
Crosses

Answer 23

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

Question 24

Greater Auricular
vertebral level
Supplies
Runs with

Answer 24

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

Question 25

Transverse cervical Vertebral level Supplies

Answer 25

C2-C3 | Supplies skin of anterior cervical triangle

Question 26

Supraclavicular Vertebral level Supplies Runs

Answer 26

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

Question 27

Motor nerves of posterior triangle

Answer 27

Accessory n | Phrenic n

Question 28

Accessory nerve Emerges from Supplies

Answer 28

Emerges from jugular foramen | Supplies SCM and trapezius

Question 29

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

Answer 29

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

Question 30

EJV drains into

Answer 30

subclavian vein

Question 31

Suprascapular branch off of

Answer 31

thyrocervical trunk

Question 32

Transverse cervical branch off of

Answer 32

thyrocervical trunk

Question 33

Deep muscles of posterior triangle (4)

Answer 33

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

Question 34

Splenius capitis action

Answer 34

extend and laterally rotate head and neck

Question 35

Splenius capitis innervation

Answer 35

dorsal rami of spinal nn

Question 36

Levator scapulae | Innervation

Answer 36

Dorsal scapular n (C5)

Question 37

Scalene muscles originate from Action

Answer 37

Oroiginate from transverse processes | Tilt neck laterally

Question 38

Scalene muscles | innervation

Answer 38

Ventral rami C3-8

Question 39

Interscalene traingle | Borders

Answer 39

Anterior scalene Middle scalen 1st rib

Question 40

Interscalene triangle | Contents

Answer 40

Brachial plexus | Subclavian artery

Question 41

Thoracic outlet syndrome What is it What triangle

Answer 41

Compromise of nn or aa between neck base and axilla | Due to interscale triangle compression