superficial neck

Question 1

ant digastric inn

Answer 1

CN V3

Question 2

mylohyoid inn

Answer 2

CN v3

Question 3

stylohyoid inn

Answer 3

CN 7

Question 4

SCM inn

Answer 4

CN 11

Question 5

trap inn

Answer 5

CN 11

Question 6

only full ring cartilage at the neck

Answer 6

cricoid cartilage

Question 7

atlas and axis

Answer 7

atlas=C1 and axis=C2
responsible for the rotational axis of the head
axis with dens to allow mobility with stabilty

Question 8

fasical planes infections and spread rates

Answer 8

spread quickly up and down but slowly medially/penetrating
HIGHLY VARIABLE
can’t count on them to stop the spread of infection
You can correctly identify an infection in a superficial space but that needs to be followed closely to resolution because these can quickly become life threatening

Question 9

fasical layers superficial to deep

Answer 9

subcutaneous tissue of the neck
investing layer
prevertebral layer
pretracheal layer/alar fasica and carotid sheath (similar depth but different structures)

Question 10

platysma inn

Answer 10

cervical branch CN 7

Question 11

sensory inn of the superfical neck region

Answer 11

cervical nerves: C2-4

Question 12

mm for head rotation, inn?

Answer 12

SCM and trap, both CN 11

Question 13

motor and sensory inn differences at SCM and trap

Answer 13

motor: CN 11
sensory: C2 and C3

Question 14

nerve running with the ext jugular superiorly

Answer 14

great auricular nn

Question 15

brachial plexus between what strucutres

Answer 15

mid and ant scalene mm

Question 16

subclavian aa gives rise to?

Answer 16

axilary aa

Question 17

occipital vv and maxillary vv form?

Answer 17

retroman vv

Question 18

facial vv and the retroman vv form?

Answer 18

external jugular

Question 19

ansa cervicalis

Answer 19

inn: omohyoid, sternohyoid, sternothyroid
formed from C1, C2, C3
DOES NOT INN THE THYROHYOID OR GENIOHYOID

Question 20

sensory nn of the superificial neck/posterior head

Answer 20

great auricular 
greater, third, and lesser occipital 
supraclavicular 
transverse cervical nn 
cutaneous branches of post rami

Question 21

phrenic nn

Answer 21

to the diaphragm

from C3, C4, C5

Question 22

inn of geniohyoid and thyrohyoid

Answer 22

inn from C1 and C2, not part of the ansa cervicalis

will hitch ride in CN 12

Question 23

carotid sinus and body location and functions

Answer 23

present at the bifurcation of the common carotid

sinus: baroreceptors
body: chemoreceptors

Question 24

where does the int jugular exit the skulll

Answer 24

jugular foramen

Question 25

what nn exit at the jugular foramen

Answer 25

CN 9, 10, 11

Question 26

what nn can transmit info from the carotid sinus/body

Answer 26

9 and/or 10

Question 27

subcutaneous fascia contents

Answer 27

platysma

Question 28

investing layer contents

Answer 28

trap, SCM

Question 29

mm deep to the investing layer

Answer 29

omohyoid, sternohyoid, sternothyroif

Question 30

contents of prevertebral fascia

Answer 30

deep neck and back mm, LN and some nervous structures

Question 31

contents of the carotid sheath

Answer 31

common carotid, internal jug, vagus nn

Question 32

contents of pretracheal fascia

Answer 32

trachea, thyroid, esphogus