Anatomy of the Limbic system Flashcards
What is highlighted in red
what is 4 and what is 24?
limbic lobe
cingulate gyrus 4
parahippocompal gyrus 24
what are the 4 key structures of the Limbi system (hippo with a hat)
Label the below image amygdala
amygdala
hippocomapsu
thalmus
Where is the hippocampus found? what is its role
‘sea horse’ on the temporal lobe
found between dentat gyris and parahippocmapus grus
Role- memory consolidation, spatial navigation and orientation
What is the Function of the hypthalamus
What is the mamillary body a part of?
the hypothalmus
What is the labelled green structure?
hippocampus
medial aspect of the temporal lobe closely related to the inferior horn of the lateral ventricle
Name the structure on the diagram below
(connecting the hippoxampus to the mamillary body)
Fornix
what is the role of the Mamillary body?
Helps to process and recall ememories (especially smells)
alos invovlved in emotions behvaiour and recongition of sensations
What does the Hypothalamus form part of a ventricle swall
Lateral wall of the third ventricle
Label the below image
What is the labelled structure
What are the roles of the 4 Major parts of the Limbic system?
Describe Papez cirucitry?
Stimulus—–> hippocampus
relays to the mamillary bodies (hypothalamus)
comnnected to the anteriro nucleus of the thalamus—-> cingulate cortex—–> cortex
Describe how infromatiomn goes from seeing to interepting to remebering pathway
PVC—-> ventral visual stream—–> parahippocomapal gyus—> hippocmapus (papex cirucitry)
What type of memory is the Hippocampus invovled in?
Declarative memory
Storage and retrieval of material that is available to consciousness and can be in principle be expressed by language- hippocampus (facts/ dates/ names/ )
What is the role of the association cortex?
Higher order cortex- makes sense of information from the primary snensory cortex
what is th role of the Prefrotnal cortex?
Behavioural planning
why does information go from the association cortex- to papez cirucitry back again?
Stimulus is processed and consolidated (short term memories) and are then sent back to association cortex to be remembered (long term)
Describe the baasic link betweent the neocortex, loimbic system and output pathwasy
what is the role of the amygdala
what can overide the amygdala fear response?
prefrontal cortex controls the amygdala
Describe the asecnding reticular system?
neuroens in braisntem have global cortex
infleucne mood
sleep wake (hypothalamus)
arousal
cocnentration
Describe short term and long term storage of memories in the brain (which areas)
