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21 Cards in this Set

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what is the subicular/subiculum?
transition b/w 6-layered and 3-layered cortex

transition b/w neocortex and cortical portions of HC
Subicular transitions to what Horn?
Cornuu Ammonis

interdigitates with the dentate gyrus
Fimbria leaves HC and becomes..
the fornix

memory/emotions
Renders the HF non-functional in Alzheimer's
amyloid plaques
neurofibrillary tangles
Fornix terminates
in the mammilary bodies
Mammillothalamic Tract
MB to ATN
Cortical Associations of Papez's Circuit

allows for
frontal, parietal, occipital, temporal

laying down new memories
Limbic Lobe is composed of
amygdala
HC
cingulate gyrus
olfactory impulses

*also called Rhinencephalon
Olfactory Nerves synapse
on Mitral cells

ON are true bipolar sensory neurons
Medial Olfactory tract terminates
terminates in MOArea
5 Components of MOA
1. septum pellucidum
2. olfact trigone
3. med portion of ant perforated substance
4. subcallosal gyrus
5. parolfactory area of broca
5 Areas of MOA send nuerons to Hypothalmus via
Medial Forebrain Bundle

MFB terminates on VHN
VHN is connected w/ all hypothalamic structures
Dorsal longitudinal Fasiculus(DLF) arises from
hypothalamic interconnections with Ventromedial hypothalamic nucleus (VHN)
DLF teminates on CN assoc w/feeding
CN V, VII, NA, XII, IX
SSN ISN

smell something good-->salivate
Lateral Olfactory Tract (LOT)
Prepiriform cortex

olfactory impulses can stimulate Papez's circuit
Amygdalohypothalamic pathway
direct connections from amygdala to hypothalmus

allow for our unique emotional responses to dfft things
-preferences
*Vitally important for emotional development
Prefrontal cortex fully myelinated in man at what age?
23/24
Lesions of Amygdala syptoms
1. sham rage
2. placidity
Herpes Simplex can cause
bilateral lesions of medial temporal lobes
squamous cell carcinoma metstisize to medial temporal lobes
Paraneoplastic limbic encephalitis
akinetic mutism
loathness to move, depressed, dec memory, bored

from cingulate gyrus damaged anteriorly