DCF & NeuroVascular Structures Of The Neck

Question 1

Layers of DCF

Answer 1

Superficial Layer → aka Investing Layer of DCF

Middle Layers
I. Muscular Layer
II. Visceral Layer

Deep Layers
I. Ventral → Alar Fascia
II. Dorsal → Prevertebral Fascia

Question 2

Investing layer DCF encloses

Answer 2

2 Muscles;
Trapezius and SCM

2 Glands;
Parotid and Submandibular

2 Spaces;
SupraSternal space
SupraClavicular Space

2 Ligaments;
StyloMandibular
SphenoMandibular

Question 3

Contents of SupraClavicular Space

Answer 3

SupraClavicular Nerve

External Jugular Vein

Question 4

Contents of SupraSternal Space of Burns includes;

Answer 4

Jugular Venous Arch

Sternal head of R and L SCM

Lymph-nodes

Interclavicular Ligament

Question 5

DCF ~ Middle Layer Consists of

Answer 5

1. Muscular Layer
   ~ encloses Infrahyoid Muscles
2. Visceral Layer
   a) Buccopharyngeal Fascia
   b) PreTracheal Fascia

Question 6

Buccinator and Constrictor Muscles are covered by __________ Fascia.

Answer 6

Buccopharyngeal Fascia

Question 7

Berry ligament is formed by

Answer 7

PreTracheal Fascia

PreTracheal Fascia splits and encloses the Thyroid Gland

Posteriorly It thickens and forms Berry Ligament

Question 8

Berry Ligament attaches __________ to ____________

Answer 8

Thyroid Gland to Cricoid Cartilage

Therefore Thyroid Gland and Thyroid Swellings move with deglutition because of Berry Ligament.

Question 9

MC site of damage of Recurrent Laryngeal Nerve during Thyroid Surgery is

Answer 9

Over Berry Ligament

Question 10

Roof of Posterior Triangles is formed by which layer of DCF

Answer 10

Superficial / Investing Layer of DCF

Question 11

Deep Layer of DCF consists of

Answer 11

Ventral ~ Alar Fascia

Dorsal ~ PreVertebral Fascia

Question 12

PreVertebral Fascia encloses

Answer 12

Encloses the Vertebral Muscles

It forms floor of Posterior Triangles

Forms Axillary Sheath which encloses ~

Question 13

Axillary sheath encloses ?

Answer 13

Brachial Plexus and Axillary Artery

Question 14

Carotid Sheath is formed by

Answer 14

All layers of DCF

Question 15

Contents of Carotid Sheath

Answer 15

Upper Part ~ Internal Carotid Artery

Lower Part ~ CCA, ICA and Vagus

Question 16

Anterior walk of Carotid Sheath has

Answer 16

Ansa Cervicalis

Question 17

Posterior to Carotid Sheath

Answer 17

Cervical Sympathetic Chain

Question 18

Alar Fascia joins Buccopharyngeal Fascia at the level of

Answer 18

C7

May vary from C6 to T4

Question 19

Relation of Dangerous Area of Neck

In Front -

Behind -

Extension -

Answer 19

In Front - Alar Fascia

Behind - PreVertebral Fascia

Extension - Base of Skull to Mediastinum

Question 20

List SupraHyoid Muscle 4

Answer 20

Nerve to Mylohyoid

Mylohyoid
Ant. Belly of Digastric

Facial Nerve

Post. Belly of Digastric
Stylohyoid

Question 21

List InfraHyoid Muscles

Answer 21

Ansa Cervicalis~

Superior Belly of OmoHyoid
Inferior Belly of OmoHyoid
SternoHyoid
SternoThyroid

ThyroHyoid ~ C1 Fibres through Xll CN

Question 22

All InfraHyoid Muscles are innervated by Ansa Cervicalis except

Answer 22

ThyroHyoid Muscle ~ C1 Fibres through Hypoglossal Nerve

Question 23

Cervical Plexus Gives

Answer 23

Cutaneous Branches

Muscular / Motor Branches

Question 24

Cutaneous Branches of Cervical Plexus With Root Value

Answer 24

Lesser Occipital Nerve - C2

Greater Auricular Nerve - C2, C3

Transverse Cervical Nerve - C2, C3

SupraClavicular Nerve - C3, C4

Question 25

Skin over the angle of Mandible supplied by

Answer 25

Greater Auricular Nerve