Anatomy of the Neck Flashcards
anterior neck defined as?
lower border of mandible to manubrium
posterior neck defined as?
superior nuchal line to C7-T1 disc
Vertebral fascial compartment contains and where?
posterior
postural muscles and vertebrae
Vascular fascial compartment where? contains?
laterally
carotid sheath
Visceral/pretracheal fascial compartment of neck is where? contains?
Anterior Thyroid, parathyroid thymus trachea esophagus
superficial fascial compartment where? contains?
Anteriorly
platysma
subcutaneous fat
external jugular vein path?
starts at angle of mandible, descends along SCM
What is in the investing layer of fascial compartment? where does it surround?
surrounds all cylinders
splits to enclose:
Trapezius
SCM
pre-tracheal fascia attaches to what? so what?
Hyoid bone. Anything in that compartment will move with swallowing, eg. thyroid
two fascias near the tracheal?
pre-tracheal
buccopharyngeal
what do the spaces between the neck fascial compartments significant?
leads to mediastinum, infection spread risk
neck Anterior triangle borders?
SCM
inferior border ot mandible
midline of neck
neck posterior triangle borders
behind SCM
in front of traps
above middle 1/3 clavicle
anterior vertebral strap muscles lie where?
between investing fascia and
pre-tracheal fascia
2 groups of anterior vertebral strap muscles?
supra hyoid
infrahyoid
anterior vertebral strap muscles innervation?
anterior rami of cervical nerves
Ansa cervicalis
suprahyoid muscles connect what?
hyoid to skull
floor of mouth
carotid sinus and body is in the internal or external carotid artery?
internal
bifurcation of common carotid level?
C3-4
6 branches off external carotid?
3 off front: superior thyroid artery lingual facial 2 off back: superior auricular occipital arteries 1 deep ascending pharyngeal artery
internal jugular is medial or lateral to arteries in carotid sheath?
lateral
cranial nerves 9,10,11 direction after it exits through jugular foramen?
IX forward to oropharynx
X down into carotid sheath
XI back to accessory
somatic sensory vagus innervates?
mucous membrane of larynx
branchial motor vagus innervates?
muscles of pharynx, larynx, soft palate
CN XII damage mean tongue deviates?
towards lesion
thyroid isthmus is between which tracheal rings?
2,3,4
location of thyroid lobes?
laterally between thyroid cartilage and 6th tracheal ring
what can goiter compress to structures around trachea?
- trachea
- esophagus
- recurrent laryngeal nerve
- internal jugular vein
recurrent laryngeal nerve is embedded into?
thyroid fascia
10% of people there is what kind of blood supply to thyroid?
thyroid ima artery along the isthmus
2 paired arteries supply the thyroid?
paired superior thyroid arteries (ext. carotids)
paired inferior thyroid arteries (subclavian)
3 pairs of veins of thyroid?
superior
middle
inferior
thyroid arteries
origin of thyroid?
tongue/ foramen caecum
Scalenus medius and anterior are which fascia?
deep to prevertebral fascia
XI passes where to get to traps?
between or through SCM crosses on levator scap
roots of brachial plexus pass between?
Scalenus medius and anterior
2 important lymph nodes:
J-D jugulo-digastric node
J-O jugulo-omohyoid node (sentinel node)
