General Flashcards
telencephalon
cerebral hemispheres
diencephalon
hypothalamus and thalamus
mesencephalon
midbrain
metencephalon
pons and cerebellum
rhombencephalon
medulla
spinal cord ends at approximately
T12-L1
The dura continues as the ____ in the peripheral nerve
epineurium
The arachnoid continues as the ____ in the peripheral nerve
perineurium
Brain structures without BBB
OVLT, median eminence, posterior pituitary, subfomical organ, pineal gland, area postrema
drugs that access the CNS
lipophilic, free-drug, non-ionized
familial hemiplegic migraine
mut of P/Q calcium channels gene = CACNA1A
episodic ataxia type 2
truncation mutation of Cav2.2 calcium channels
congenital stationary night blindness
truncated L type calcium channels in the retina
Lambert eaton
small cell carcinoma produce antibodies to voltage gated calcium channels (P/Q type)
benign familial neonatal seizures
mutation of KCNQ2 commonly. = gene encoding a voltage gated potassium channel (Kv7.2)
episodic ataxia type 1
mut in Kv1.1 type potassium channels in purkinje cells
Neuron types in striatum
spiny and aspiny
spiny neurons are ___ than aspiny neurons
smaller
___ neurons have long axons which leave the striatum
spiny = projection neurons
all spiny neurons use the NT
GABA
substance P terminals are found in the
GPi
enkephalin terminals are found in the
GPe
enkephalinergic striato-GPe neurons possess
D2 R type
substance P- containing striatal projection neurons possess
D1 R type
striato-GPe neurons are responsible for
inhibiting movement conflicting with intention
striato-GPi neurons are involved in
initiating limb movement
striato-SNr neurons are involved in
initiating eye movement and head movement
striato-SNc neurons are involved in
regulating the dopamine neurons
4 types of interneurons in striatum
cholinergic, parvalbuminergic, somatostatinergic, calretinergic
SN pars compacta
input to basal ganglia circuit supplying striatum with dopamine
SN pars reticulata
output, signals from basal ganglia to other structures
locations of subthalamic nucleus
below thalamus, above cerebral peduncle