ICAST Flashcards
Layers of scalp
- S = skin
- C = cutaneous
- A = aponeurosis
- L = loose areolar tissue
- P = periosteum
In which layer of the scalp does shearing occur
Loose areolar tissue
Which nerve supplies posterior scalp
c2
Which nerve supplies lower dentition
5c
Which nerve passes through infraorbital fossa
Infraorbotal nerve (branch of 5b)
Where can infection in pterygopalatine fossa pass to and why
Anywhere in head/neck - acts as a crossroads
Which nucleus is associated with primary afferents of taste
nucleus solitaires
On which nerve are taste fibres carried in tongue?
lingual from 5c
on which nerve are taste fibres carried into skull base
chorda tympani
Bleeding skin cancer
SCC
How to tell if SCC has invaded bone
Is it mobile
Pain temp coarse touch in
spinothalamic
pain detected in
frontal cortex, limbic system and thalamus
brown squared syndrome
hemisection of spinal cord
UMN lesion
ipsilateral UM signs due to lateral corticospinal tract damage
course of pudendal nerve as it enters perineum
leaves sacrum, goes through greater sciatic foramen, allcocks canal and re-enters through lesser sciatic foramen
bony landmark for episiotomy
ischial spine
How does infection spread from ear to sigmoid sinus
emissary veins or direct contact via bone
which sinus empties into sigmoid sinus
transverse sinus
bone surrounding ossicles and cochlea
bony labyrinth
fluid inside bony labyrinth
perilymph
membranous labyrinth
system of membranes within bony labyrinth is membranous labyrinth - contains endolymph
pars…
pars flaccida = top part, floppy
pars tensa = bottom part, rigid
cholesteatoma forms when negative pressure sucks pars flaccida into upper ear = dead skin and smell
hillocks 1-3 from pharyngeal arch
1
hillocks 4-6 from pharyngeal arch
2
