Superficial Triangles and Cervical Viscera Flashcards Preview

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Flashcards in Superficial Triangles and Cervical Viscera Deck (39):
0

important structure in suboccipital triangle

vertebral artery

1

The 3 important landmarks of the neck

C6 (sixth cervical vertebra)
greater horn of the hyoid bone (greater cornu)
anterior scalene muscle

2

vertebral artery enters the transverse process of what vertebra

C6

3

Phrenic N roots

C3, C4, C5

4

hangman's fracture risks damaging

phrenic nerve

hangman fracture = fracture of C2

5

________N runs on the anterior surface of what muscle

Phrenic N, anterior scalene.

6

Lateral Neck Layer 1 contents

platysma m.
external jugular vein

7

Lateral Neck Layer 2 contains

SCM
CN XI

8

3 structures you want to preserve in a Radical Nec dissection

SCM
IJV
CN XI

9

SCM innervated by

CN XI

10

Posterior triangle borders

SCM
Trapezius
middle 1/3 of clavicle

11

EJV is formed by the conjunction of what veins

posterior auricular v
retromandibular v

12

Spinal Accessory N

CN XI
innervates SCM and Trapezius
enters triangle slightly above midpoint of SCM
contributions from C2-C3 (SCM) C3-C4 (trapezius)

13

2 places we care about branchial fistulas and cysts being distributed

along SCM
along midline - development of thyroid, thyroglossal duct cyst

14

What does the IJV drain

the brain

15

Contents of the Root of the Neck

Carotid Sheath (IJV, common carotid, vagus N)
subclavian v
phrenic n
anterior scalene
subclavian a
brachial plexus

16

contents of the carotid sheath

common carotid a
IJV
vagus n.

17

Structures of the lateral root of the neck

suprascapular artery and subclavian vein
transverse cervical artery
suprascapular artery

18

Structures in the mid portion of the root of the neck

centered on the anterior scalene and its relationships with
subclavian v
transverse cervical a
suprascapular a
subclavian a
brachial plexus

19

Root of the neck medial to anterior scalene

carotid sheath, thoracic duct, costocervical trunk, inf thyroid artery, ascending cervical a, recurrent laryngeal n, sympathetic chain, vertebral a and ganglion

20

structures that run anterior to anterior scalene m (2)

subclavian v
phrenic n.

21

Structures that run posterior to anterior scalene m

subclavian a
brachial plexus

22

How do you tell the difference between external carotid and internal carotid

external has branches in the neck
first branch is superior thyroid.

23

Anterior triangle of then neck contains what triangles (4)

muscular triangle
carotid triangle
submandibular triangle
submental triangle

24

submandibular triangle borders

bounded by the inferior edge of the mandible, and the anterior and posterior digastric

25

submandibular triangle contains what important structure

submandibular gland

26

what structure do we want to be carful to dissect out of the submandibular salivary gland

facial artery

27

Innervation of the submandibular gland

preganglionic parasympathetic fibers from superior salivatory nucleus (exit brainstem with facial nerve, travel through chorda tympani, and join with lingual nerve before terminating in the submandibular ganglion)
postganglionic fibers from submandibular ganglion distribute as numerous short branches to the paranchyma of the gland

postganglionic sympathetic fibers originate in superior cervical ganglion and reach teh gland by coursing in external caroti and facial plexuses in the adventitia of respective arteries

28

What structure will you find with inferior thyroid a

recurrent laryngeal n

29

Where is the thyroid gland located

midline, around the trachea at tracheal rings 2-4

30

What is the name of a not uncommon extra lobe of the thyroid

pyramidal lobe, may extend upwards from the isthmus

31

Thyroid gland lymph drainage

deep cervical lymph nodes, can and DOES cross sides of the body.

32

relationship of recurrent laryngeal n to the thyroid

RLN located medial to lobes, between trachea and esophagus
innervates all of the mucles of the larynx, except cricothyroid
cut RLN== dysphonia

33

Blood supply of thyroid (arterial)

superior thyroid artery (from common or external carotid)
inferior thyroid artery (thyrocervical trunk)
lowest thyroid artery

34

Blood supply of the thyroid (venous)

veins are what drain the hormones out
superior and middle thyroid veins drain into IVC
inferior thyroid drains into brachiocephalic vein

35

Cricothyrotomy

risk of thryoglossal duct cyst and blood loss
if they need it just do it
establishes emergency airway by cutting through the cricothyroid membrane

36

esophagus is _______ to trachea

posterior

37

Cupula of pleura

(of the lung)
pyramidal shaped portion of thoracic cavity that extends into root of the nec between scalenes and longus colli mm
extends 3 cm into root of neck at midclavicular line

Penetrating wounds to the base of the neck may puncture the pleural cavity and/or lung, collapse the lung, and result in pneumothorax

38

Retropharyngeal space

posterior to the esophagus and the prevertebral fascia