Limbic System

Question 1

What are the 4 main functions of the limbic system

Answer 1

Food- (ex memory of where food is)

Fear- amount ex

Fight

Fuck

Question 2

Parahippocampal gyrus location/function

Answer 2

seen on inf surface of cerebral hemisphere

rolls on itself to form hippocampus

Question 3

Where is the hippocampus found and its function

Answer 3

Seen on the floor of the lateral ventricle

Sig role in long term memories

Question 4

Where is the uncus found and what does it create and do

Answer 4

Next to parahippocampal gyrus and hippocampus

Creates dentate gyrus elevations

involved in forming episodic mess

Question 5

where is the fimbria located and what does it lead to the formation of

Answer 5

interposed bw hippocampus and dentate gyrus

Leads to formation of post column of fornix

Question 6

function of the amygdaloid body

Answer 6

Plays important role in emotion behaviour, help regulate fear/anxiety

Question 7

what is located in the septal area

Answer 7

Contain nuclei which are linked to regulating emotion

• receive afferent signal from many limbic structures

Question 8

how do signals from cortex of uncus get to the septal area

Answer 8

continues to dentate gyrus follows along indusium griseum to septal area

Question 9

what are the steps of the papez circuit

Answer 9

1. Signals enter hippocampus
2. signals travel thru fornix to maxillary boddies
3. travel thru maxillary thalamic tract to ant thalamic nuc
4. Projects to cingulum and entohinal cortex
5. From there it rolls back to parahippocampal and hippocampus

Question 10

what are hippocampla lesions associated w

Answer 10

Amnesia

Question 11

If entorhinal cortex is destroyed what can it lead to

Answer 11

Destruction of sense of smell.