SSN Head & Neck Anatomy Flashcards
unmyelinated section of cord (gray matter)
horn
initial segment of nerve distal to spinal cord
root
distal branch of spinal nerves
ramus
branch connecting spinal nerve to sympathetic trunk
ramus communicans
mass of nerve cell bodies
ganglion
GA
somatic sensory
GSE
somatic motor
GVE
postsynaptic sympathetics only!
cervical GVE leave ventral rami at
T1-T4
Cervical GVE enter which ramus communicans?
white
Post-synaptics enter which ramus communicans?
grey
SA
special senses
SVE
pharyngeal arch motor
Where are head and neck symapthetics anything but vascular?
secretomotor in sweat glands
What separates EJ and IJ?
SCM
All lymph drains to
Deep cervical, to jugular trunk, to subclavian artery
trigeminal triggers
the two tensors
infratemporal fossa contains
pterygoids, pterygoid venous plexus, maxillary artery and branches, V3 and branches, chorda tympani, otic ganglion
mandibular ligaments
sphenomandibular, stylomandibular, lateral
what wraps around the middle menigeal artery?
V3: auricotemporal to otic (carrying CNIX)
what layers are falx and tentorum made of?
meningeal
where do dural sinuses drain?
internal jugular
what intracranial sinus connects to superior opthlamic vein?
cavernous!
what eye muscle does not have proximal attachment at apex of orbit?
inferior oblique
what muscles are anteriorly visible?
inferior oblique, inferior rectus
obliques are
Abductors
test obliques with
Adduction
s. and I. Rectus are
adductors
test s. & I. Rectus with
abduction
can look in but not down. Which nerve?
trochlear
Down and out?
oculomotor nerve palsy
superior and middle constrictor innervation
pharyngeal branch of CNX
inferior constrictor innervation
external branch of superior laryngeal
vertical muscles of larynx all start with
stylo
Innervation of the stylos
styloglossus: XII, stylopharyngeal: IX, stylohyoid: VII
Between superior and middle constrictor
stylopharyngeus, nerves and arteries to oral cavity
Between middle and inferior constrictors (pierces thyrohyoid membrane)
internal branch of superior laryngeal nerve, superior laryngeal artery
Below inferior constrictor
recurrent laryngeal nerve, inferior laryngeal arteries
what are the borders of the palantine tonsil?
palatopharyngeus, palatoglossus
larynx/hyoid elevators
suprahyoids, stylo and palatopharyngeus, inferior and middle pharyngeal constrictors
which muscle elevates larynx only?
thyrohyoid
infrahyoid depressors
sternohyoid, sternothyroid, omohyoid
what depressed hyoid only?
thyrohyoid
parasympathetic nerves to the pterygopalatine ganglion
from greater petrosal nerve
sympathetics to the pterygopalantine fossa
from deep petrosl nerve