superficial neck Flashcards
ant digastric inn
CN V3
mylohyoid inn
CN v3
stylohyoid inn
CN 7
SCM inn
CN 11
trap inn
CN 11
only full ring cartilage at the neck
cricoid cartilage
atlas and axis
atlas=C1 and axis=C2
responsible for the rotational axis of the head
axis with dens to allow mobility with stabilty
fasical planes infections and spread rates
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
fasical layers superficial to deep
subcutaneous tissue of the neck
investing layer
prevertebral layer
pretracheal layer/alar fasica and carotid sheath (similar depth but different structures)
platysma inn
cervical branch CN 7
sensory inn of the superfical neck region
cervical nerves: C2-4
mm for head rotation, inn?
SCM and trap, both CN 11
motor and sensory inn differences at SCM and trap
motor: CN 11
sensory: C2 and C3
nerve running with the ext jugular superiorly
great auricular nn
brachial plexus between what strucutres
mid and ant scalene mm
subclavian aa gives rise to?
axilary aa
occipital vv and maxillary vv form?
retroman vv
facial vv and the retroman vv form?
external jugular
ansa cervicalis
inn: omohyoid, sternohyoid, sternothyroid
formed from C1, C2, C3
DOES NOT INN THE THYROHYOID OR GENIOHYOID
sensory nn of the superificial neck/posterior head
great auricular greater, third, and lesser occipital supraclavicular transverse cervical nn cutaneous branches of post rami
phrenic nn
to the diaphragm
from C3, C4, C5
inn of geniohyoid and thyrohyoid
inn from C1 and C2, not part of the ansa cervicalis
will hitch ride in CN 12
carotid sinus and body location and functions
present at the bifurcation of the common carotid
sinus: baroreceptors
body: chemoreceptors
where does the int jugular exit the skulll
jugular foramen
what nn exit at the jugular foramen
CN 9, 10, 11
what nn can transmit info from the carotid sinus/body
9 and/or 10
subcutaneous fascia contents
platysma
investing layer contents
trap, SCM
mm deep to the investing layer
omohyoid, sternohyoid, sternothyroif
contents of prevertebral fascia
deep neck and back mm, LN and some nervous structures
contents of the carotid sheath
common carotid, internal jug, vagus nn
contents of pretracheal fascia
trachea, thyroid, esphogus
