12/2/16 Limbic System

Question 1

What structure in the brain is responsible for fear?

Answer 1

-Amygdala

Question 2

What structure in the brain is responsible for memory?

Answer 2

-Hippocampus

Question 3

T/F

The hippocampus helps with spacial recognition of where you are at.

Answer 3

True

Question 4

In the limbic system where do you go from the hypothalamus?

Answer 4

-Anterior thalamus

Question 5

In the limbic system where do you go from the anterior thalamus?

Answer 5

-Cingulate cortex

Question 6

In the limbic system where do you go from the cingulate cortex?

Answer 6

-Hippocampus

Question 7

In the limbic system where do you go from the hippocampus?

Answer 7

-Hypothalamus

Question 8

What two responses do you get from the limbic system?

Answer 8

• Feeling

- Bodily response

Question 9

What takes in information from all over the cortex in the circuit of papez?

Answer 9

-Cingulate gyrus

Question 10

What does information travel through from the cingulate gyrus to the parhippocampal gyrus?

Answer 10

-Cingulum

Question 11

When information travels from the cingulate gyrus through the cingulum where does it go?

Answer 11

-Parahippocampal Gyrus

Question 12

What does information travel through from the parahippocmpal gyrus to the hippocampus?

Answer 12

-Perforant Path

Question 13

When information travels from the parahippocampal gyrus through the perforant path where does it go?

Answer 13

-Hippocampus

Question 14

What does information travel through from the hippocampus to the mammillary bodies?

Answer 14

-Fornix

Question 15

When information travels from the hippocampus through the fornix where does it go?

Answer 15

-Mammillary bodies

Question 16

What does information travel through from the mammillary bodies to the anterior thalamus?

Answer 16

-Mammillo-thalamic tract

Question 17

When information travels from the mammillary bodies through the mammillo-thalamic tract where does it go?

Answer 17

-Anterior thalamus

Question 18

What does information travel through from the anterior thalamus to the cingulate gyrus?

Answer 18

-Thalamo-cortical tract

Question 19

When information travles from the anterior thalamus through the thalamo-cortical tract where does it go?

Answer 19

-Cingulate gyrus

Question 20

T/F

Wernicke-Korsakoff Syndrome is a type of Limbic Amnesia

Answer 20

True

Question 21

What is the major cause of Wernicke-Korsakoff syndrome?

Answer 21

-Vitamin B1 deficiency & alcoholism

Question 22

What is the site of wernicke-korsakoff syndrome?

Answer 22

-Mammilo-thalamic tract disrtuption

Question 23

What are the symptoms of Wernicke-Korsakoff Syndrome?

Answer 23

• Inability to form new memories
• Loss of memory
• Hallucinations
• Confabulation

Question 24

Do you confabulate in Wernicke’s syndrome?

Answer 24

-No

Question 25

What are the three functions of the hippocampus?

Answer 25

- Memory consolidation - Motivation - Location

Question 26

What are the three major divisions of the hippocampus?

Answer 26

- Dentate gyrus - CA3 (cornus Ammon 3) - CA1 (Cornus Ammon 1)

Question 27

T/F | The dentate nucleus has ongoing cell division throughout your life

Answer 27

True

Question 28

What is the major afferent of the hippocampus?

Answer 28

-Perforant Path

Question 29

What is the Intrinsic (Trisynaptic circuit)?

Answer 29

-The pathway from the Dentate gyrus, CA3, and CA1

Question 30

What is the major efferent of the hippocampus?

Answer 30

-Fornix

Question 31

What is the minor afferent to the hippocampus?

Answer 31

Fornix

Question 32

What is the first step of the trisynaptic circuit?

Answer 32

-From the entorhinal cortex through the perforant pathway to the dentate gyrus

Question 33

What is the second step of the trisynaptic circuit?

Answer 33

-From the dentate gyrus through the mossy fibers to the hippocampus (CA3)

Question 34

What is the third step of the trisynaptic circuit?

Answer 34

-From CA3 through schaffer collaterals to CA1

Question 35

What are the two parts of the fornix that branch off?

Answer 35

- Post commissural (circuit of papez) | - Pre commissural (resent through the pathway)

Question 36

When you have damage to the medial temporal lobe what is a common disease?

Answer 36

-Limbic Amnesia

Question 37

T/F | Amnesia has to be bilateral medial temporal lobe damage

Answer 37

True

Question 38

When you have damage to the hippocampus what are the signs?

Answer 38

- Cannot form new memories | - Can recall prior events

Question 39

What does Alzheimers damage?

Answer 39

-Bilateral Hippocampus damage

Question 40

What are four common alzheimer's deficits?

Answer 40

- Amnestic - Reduced motivation - Trouble navigating familiar places - General Cognitive Impairment

Question 41

What are the three major anatomical divisions of the amygdala?

Answer 41

- Basolateral complex - Corticomedial - Central nucleus

Question 42

What does the corticomedial division of the amygdala deal with?

Answer 42

-Olfactory

Question 43

What does the central nucleus of the amygdala deal with?

Answer 43

-Autonomic

Question 44

What are the two major efferents that come from the amygdala?

Answer 44

- Amygdalofugal | - Stria terminalis

Question 45

Where in the amygdala does the stria terminalis come from?

Answer 45

-Central nucleus

Question 46

When you bang a book what makes you jump?

Answer 46

-The pathway through the ventral amygdalofugal fibers

Question 47

When you bang a book what pathway makes you want to run?

Answer 47

-The pathway through the stria terminalis

Question 48

When patients have amygdala damage what might you see?

Answer 48

- Poor conditioned emotional response | - Poor recognition of fear, especially facial recognition

Question 49

What is the cause of Kluver-Bucy syndrome?

Answer 49

-Bilateral lesions to the amygdala caused by Trauma, Tumors, or Viral

Question 50

What are the symptoms of Kluver bucy syndrome

Answer 50

- Docility - Overeating - Hyperphagia - Hyperorality - Hypersexuality - Visual agnosia