Neuroanatomy Psarro's questions Flashcards
1
Q
Name circumventricular organs (lacking a blood-brain barrier)
A
- pineal body
- subfornical organ
- organum vasculosum of the lamina terminalis
- median eminence of the hypothalamus
- neurohypophysis
- subcommissural organ
- area postrema
2
Q
Circuit for pupillary dilation
A
- 1st order N: HT> descend to BS and C spine to the T1-2 level
- synapse on ipsilateral pregagnlionic sympathetic fibers in C spine, travel with sympathetic fibers as second order neurons
- 3rd order: neurons on the ICA traveling to the orbit and innervating the smooth muscle of the iris
3
Q
Annulus of Zinn
What structures pass above it?
A
4
Q
Blood supply to internal capsule
A
mainly lenticulostriate artery
rostromedially> recurrent a. of haubner
genu> direct branches of ICA
posteriorly> a. choroidal
5
Q
Muscles of hand supplied by median nerve
A
L: lateral two lumbricals
O: opponens pollicis
A: abductor pollicis brevis
F: flexor pollicis brevis
6
Q
BAERS wave (1-7)
A
- E: external ear (auditory nerve)
- C: cochlear nucleus
- O: (Superior) Olivary nucleus
- L: lateral lemniscus
- I: inferior colliculus
- Medial geniculate body
- Auditory radiations
