Review of the anatomy of the neck

Question 1

which layer comes directly beneath the skin

Answer 1

superificial fascial layer

Question 2

superificial fascial layer

Answer 2

contains fat, superficial lymph nodes and the platysma

Question 3

platysma

Answer 3

Question 4

which is the first of the deep. erical layer

Answer 4

the investing layer

Question 5

the investing layer

Answer 5

encircles the neck like a collar

splitting to surround the SCM anteirorly and the trapezius muscle posteriorly

Question 7

what is this muscle

Answer 7

sternocleidomastoid

Question 8

what is this muscle

Answer 8

trapezius

Question 9

infrahyoid muscles sit below the level of the

Answer 9

hyoid bone

Question 10

suprahyoid

Answer 10

sit above the hyoids

Question 11

boundary of the antirior triangle is formed by the

Answer 11

lateral- anteiorr border of the SCM

medial- imaginary mid line in saggital plane

superior- inferior border of the mandible

Question 12

what is found within the anteiror triangle

Answer 12

important subtriangles

-carotid triangle

Question 13

carotid triangle borders

Answer 13

lateral wall- SCM

medial wall- superior belly of omohydoid

superior wall- posterior belly of digastric

Question 14

content of the carotid triangle

Answer 14

common carotid artery (which bifurcates within the carotid triangle into the external and internal carotid arteries)

the internal jugular vein

the hypoglossal and vagus nerves

Question 15

posterior triangle

Answer 15

has a number of key structures which communicate betwen the enck and the upper limb

Question 16

boundaries of the posterior triangle

Answer 16

anteiror - posteiror part of the SCM

posterior- trapzius

infeiror- clavical

scalene muscles form the floor

Question 17

what runs across the posterior triangle

Answer 17

infeiror belly of omohyoid

Question 18

important contents of the posteior triangle

Answer 18

subclavian artery (behind vein) and vein run through this triangle before entering the upper limb

trunk of the brachial plexus

phrenic nerve

subclavian artery runs behind the scalene muscles whilst the vein runs in front of the scalene muscles

Question 19

thryoid gland is tucked in between the

Answer 19

infrahyoid muscles

Question 20

important vasculature of the neck

Answer 20

external jugular vein (not in carotid triangle or sheath)

internal jugular vein

common carotid artery

Question 21

deep cervical layers

Answer 21

prevertebral dascia (blue)

carotid sheath and contents (red)

pre-tracheal fascia- continuous posteriorly around pharynx as the buccopharyngeal fascia

Question 22

found between the prevertebral fasica and the pre-tracheal fascia

Answer 22

retropharngeal space

Answer 23

an area where infection and absecces may collect–> can pass into the mediastinum and the thorax