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Neuro 2020 > 12/2/16 Limbic System > Flashcards

12/2/16 Limbic System Flashcards

1
Q

What structure in the brain is responsible for fear?

A

-Amygdala

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2
Q

What structure in the brain is responsible for memory?

A

-Hippocampus

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3
Q

T/F

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

A

True

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4
Q

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

A

-Anterior thalamus

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5
Q

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

A

-Cingulate cortex

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6
Q

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

A

-Hippocampus

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7
Q

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

A

-Hypothalamus

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8
Q

What two responses do you get from the limbic system?

A
  • Feeling

- Bodily response

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9
Q

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

A

-Cingulate gyrus

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10
Q

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

A

-Cingulum

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11
Q

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

A

-Parahippocampal Gyrus

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12
Q

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

A

-Perforant Path

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13
Q

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

A

-Hippocampus

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14
Q

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

A

-Fornix

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15
Q

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

A

-Mammillary bodies

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16
Q

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

A

-Mammillo-thalamic tract

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17
Q

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

A

-Anterior thalamus

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18
Q

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

A

-Thalamo-cortical tract

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19
Q

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

A

-Cingulate gyrus

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20
Q

T/F

Wernicke-Korsakoff Syndrome is a type of Limbic Amnesia

A

True

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21
Q

What is the major cause of Wernicke-Korsakoff syndrome?

A

-Vitamin B1 deficiency & alcoholism

22
Q

What is the site of wernicke-korsakoff syndrome?

A

-Mammilo-thalamic tract disrtuption

23
Q

What are the symptoms of Wernicke-Korsakoff Syndrome?

A
  • Inability to form new memories
  • Loss of memory
  • Hallucinations
  • Confabulation
24
Q

Do you confabulate in Wernicke’s syndrome?

A

-No

25
Q

What are the three functions of the hippocampus?

A
  • Memory consolidation
  • Motivation
  • Location
26
Q

What are the three major divisions of the hippocampus?

A
  • Dentate gyrus
  • CA3 (cornus Ammon 3)
  • CA1 (Cornus Ammon 1)
27
Q

T/F

The dentate nucleus has ongoing cell division throughout your life

A

True

28
Q

What is the major afferent of the hippocampus?

A

-Perforant Path

29
Q

What is the Intrinsic (Trisynaptic circuit)?

A

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

30
Q

What is the major efferent of the hippocampus?

A

-Fornix

31
Q

What is the minor afferent to the hippocampus?

A

Fornix

32
Q

What is the first step of the trisynaptic circuit?

A

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

33
Q

What is the second step of the trisynaptic circuit?

A

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

34
Q

What is the third step of the trisynaptic circuit?

A

-From CA3 through schaffer collaterals to CA1

35
Q

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

A
  • Post commissural (circuit of papez)

- Pre commissural (resent through the pathway)

36
Q

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

A

-Limbic Amnesia

37
Q

T/F

Amnesia has to be bilateral medial temporal lobe damage

A

True

38
Q

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

A
  • Cannot form new memories

- Can recall prior events

39
Q

What does Alzheimers damage?

A

-Bilateral Hippocampus damage

40
Q

What are four common alzheimer’s deficits?

A
  • Amnestic
  • Reduced motivation
  • Trouble navigating familiar places
  • General Cognitive Impairment
41
Q

What are the three major anatomical divisions of the amygdala?

A
  • Basolateral complex
  • Corticomedial
  • Central nucleus
42
Q

What does the corticomedial division of the amygdala deal with?

A

-Olfactory

43
Q

What does the central nucleus of the amygdala deal with?

A

-Autonomic

44
Q

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

A
  • Amygdalofugal

- Stria terminalis

45
Q

Where in the amygdala does the stria terminalis come from?

A

-Central nucleus

46
Q

When you bang a book what makes you jump?

A

-The pathway through the ventral amygdalofugal fibers

47
Q

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

A

-The pathway through the stria terminalis

48
Q

When patients have amygdala damage what might you see?

A
  • Poor conditioned emotional response

- Poor recognition of fear, especially facial recognition

49
Q

What is the cause of Kluver-Bucy syndrome?

A

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

50
Q

What are the symptoms of Kluver bucy syndrome

A
  • Docility
  • Overeating
  • Hyperphagia
  • Hyperorality
  • Hypersexuality
  • Visual agnosia

Neuro 2020 (7 decks)

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