12 (C) Limbic System

Question 1

Romberg test =

Answer 1

Tests position sense . feet together eyes closed

if cerebellar + motor normal = no unsteadiness

Question 2

Tabes Dorsalis // Locomotor ataxia =

Answer 2

destruction of the myelination of fibres

i.e. Dorsal column

Question 3

Syringomyelia leads to excess …. and disruption of what?

Answer 3

CSF in spinal cord

interrupts decussating spinothalamic fibres

Question 4

Hemiparesis on Rside of body

Answer 4

Motor defects = Descending cortiospinal tract

Question 5

Loss of pain/temp/pressure/touch of entire Rside of body

Answer 5

Spinothalamic tract sensory defect

Question 6

Loss of pain/temp/pressure/touch of entire Rside of Face

Answer 6

Trigeminothalamic tract affected

Question 7

Trigeminothalamic tract runs to what part of the thalamus

Answer 7

VPM

Question 8

Spinothalamic tract runs to what part of the thalamus

Answer 8

VPL

Question 9

What pathway is spared in kinasethesia?

Answer 9

Dorsal Column Pathway

Question 10

Charcot joint =

Answer 10

Removal of protective painful pain reflexes leads to overwear of joints

Question 11

Spinothalamic tract crosses the spinal cord via what structure

Answer 11

Ventral white commissure

Question 12

Limbic structures (HOME)

Answer 12

Homeostasis -> Hypothalamus
Olfactory -> Paraolfactorry area
Memory -> Hippocampus
Emotion -> Amygdala

Question 13

Limbic lobes consists of what (2)

Answer 13

Cingulate gyrus

Parahippocampal Gyrus

Question 14

Cingulum have what type of fibres

Answer 14

association fibres

Question 15

Shape of amygdala? What lobe is it found in

Answer 15

Almond shape ==> Medial temporal lobe

Question 16

What is the amygdala deep to?

Answer 16

Uncus

Question 17

Lesion to the amygdala can lead to what (2)

Answer 17

Lack of emotions // evaluations of events

Question 18

Hippocampus can be found in what lobe?

What is it deep to?

Answer 18

medial temporal lobe

Parahippocampal gyrus

Question 19

Stria terminalis connects what?

Answer 19

Amygdala ===> Hypothalamus

Question 20

Fornix connects what?

Answer 20

Hippocampus ===> Mammiliary / Hypothalamus bodies

Question 21

The majority of fibres go to what before going to the amygdala?

Answer 21

Cortex

Allows us to give context / meaning to what we see / hear

Question 22

Stria terminalis runs along what before getting to the hypothalamus

Answer 22

ventricular surface of thalamus in lateral ventricle

Question 23

Hippocampus forms what of the interior horn of lateral ventricle

Answer 23

Floor

Question 24

Structure of the fornix from Hippocampus => Mammiliary bodies

Answer 24

Fimbria => Crus => Body => Columns of Fornix => Mammilliary bodies

Question 25

Circuit of Papez does what (2)

Answer 25

Reinforce emotions + survival responses

Question 26

What part of the thalamus is used in the Circuit of Papez?

Answer 26

Anterior thalamus

Question 27

The working memory can do what with information

Answer 27

temporarily hold + manipulate information

Question 28

Long term memory is stored in what?

Answer 28

Neocortex