Cerebrum -> Cerebral Hemispheres -> Basal Ganglion, Amygdala, and Hippocampus Flashcards

1
Q

What is the white matter between the claustrum and putamen?

A

External capsule

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2
Q

What is the white matter between the claustrum and insular cortex?

A

Extreme capsule

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3
Q

What is the white matter between the globus pallidus and the thalamus along with the head of caudate nucleus?

A

Internal capsule

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4
Q

From the occipital cortex what is the stream that is involved with “where”?

A

Dorsal stream

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5
Q

From the occipital cortex what is the stream that is involved with “what”?

A

Ventral stream

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6
Q

Where does the brain make at 90 degree turn during development?

A

mesencyphalon

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7
Q

If there are problems with the anterior limb of the internal capsule what is the resulting presentation?

A

Motor diseases, ataxia, tremors

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8
Q

Where do the fibers for each of the following starting location go to in the anterior limb of the internal capsule:

  1. thalamus to:
  2. lentiform to:
  3. cortex to:
  4. frontal lobe to:
A
  1. frontal lobe
  2. caudate nuclei
  3. corpus striatum
  4. pontine nuclei
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9
Q

The anterior 2/3 of the posterior limb of the internal capsule is mostly fibers from what?

A

corticospinal tract

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10
Q

Where are sensory fibers in the posterior limb of the internal capsule mostly from? 1 And also may be from where? 2

A
  1. thalamus

2. medial lemniscus

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11
Q

What are the fibers that pass through the posterior limb of the internal capsule that are from the lower visual centers to the cortex of the occipital lobe?

A

fibers of Optic radiation

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12
Q

Where does the acoustic fibers of the posterior limb of the internal capsule get its info from and where is it taking it to?

A

From lateral lemniscus to the temporal lobe

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13
Q

Where do all motor from somatotopic pass through?

A

posterior limb of the internal capsule

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14
Q

Where is damage to the neuron if there is spastic paralysis? 1. Flaccid paralysis? 2

A
  1. upper motor lesion

2. lower motor lesion

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15
Q

What are the structures of the lateral ventricles?

A
  1. anterior horn
  2. body
  3. trigone
  4. posterior horn
  5. inferior horn
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16
Q

What type of matter is the caudate nucleus?

17
Q

Where is the head of the caudate nucleus in relation to the lateral ventricle? 1. Where is the tail of the caudate nucleus in relation to the lateral ventricle?

A
  1. immediately lateral to anterior horn

2. superior to inferior horn

18
Q

What is the connection between the putamen and caudate?

A

lentiform nucleus

19
Q

What is the structure at the center of the brain that is a collection of nuclei deep in the cerebral hemisphere and is responsible for stopping unwanted messages and makes motor movements smooth?

A

Basal ganglion

20
Q

What are the five main nuclei of the basal ganglion?

A
  1. putamen
  2. globus pallidus
  3. caudate
  4. subthalamic nuclei
  5. substantia nigra
21
Q

What nuclei of the basal ganglion are darker than the rest?

A

putamen and caudate

22
Q

What nuclei of the basal ganglion is in the diencephalon?

A

subthalamic nuclei

23
Q

What nuclei of the basal ganglion is in the mesencephalon?

A

substantia nigra

24
Q

If there is damage to any of the nuclei of the basal ganglion what motor disfunction will there be?

A

dyskinesia, with resting tremor

25
What is the grouping of the putamen and the globus pallidus called?
lentiform nucleus
26
What is the grouping of the putamen and the caudate called?
neostriatum
27
What is the grouping of the putamen, globus pallidus, and the caudate called?
corpus striatum
28
What is the structure that separates the two lateral ventricles?
septum pellucidum
29
What is the structure of the brain that is known for memory and plasticity?
hippocampus
30
What structure of the brain forms the floor of the inferior horn of the lateral ventricle?
hippocampus
31
What is the bundle of efferent fibers that leaves the hippocampus and run to the mammillary nuclei of the hypothalamus?
fornix
32
What area helps to control emotions based on memories and is related to problems with patients with PTSD?
Fornix of hippocampus
33
What connects the hypothalamus to the anterior thalamic nuclei?
mammilothalamic tract
34
What lobes is the fornix a part of?
limbic lobe
35
What type of memory is lost if the fornix is surgically transected?
recall memory (long-term info from past)
36
What ventricle is the fornix the root of?
third ventricle
37
What is the nucleus of gray matter just in front of the hippocampus?
amygdala
38
What are the four main functions of the amygdala?
1. process and interpret sensory data 2. Assign emotional valence, especially negative 3. Modulates cortical-hypothalamic flow or emotion 4. input into autonomoic, endocrine and affective response
39
Under what conditions is amygdala immediately involved when experiencing sensory input?
When there is high cortisol and sympathetic responses