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Neuroanatomy > CNS-FA17-Thalamus&Epithalamus > Flashcards

CNS-FA17-Thalamus&Epithalamus Flashcards

1
Q

The gate way to the cerebrum is via?

A

Thalamus

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2
Q

Reasoning for thalamus being the gateway to cerebrum

A

The ascending tracts cannot get to cerebrum w/o passing through thalamus first

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3
Q

The thalamus is a part of the (Diencephalon/Mesencephalon) and is decribed as (Oval/Round) shaped.

A

Diencephalon

Oval

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4
Q

____ % of the time the thalamus attach to each other via the _____

A

50%

Interthamlamic adhesion

result of growth of thalamus

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5
Q

T/F: There is a function relation between the two thalami as a result of fusion

A

False

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6
Q

What are the types of nuclei in the thalamus?

A

◦1. Relay
◦2. Association
◦3. Diffuse

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7
Q

Nucleus in thalamus that receive specific input and go to specific output

A

Relay

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8
Q

Nucleus in the thalamus that are areas that make an association w/ incoming material; end up going out to
a lot of places

A

Association

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9
Q

Nucleus in the thalamus that receives inputs and projects outputs from many areas

A

Diffuse

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10
Q

What is the name of the connective tissue running through the thalamus?

A

Internal medullary lamina

recall that it has a nucleus which are celled intralaminar nuclei

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11
Q

Name of nucleus within the internal medullary lamina

A

Intralaminar nuclei

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12
Q

What is the term for the lamina running on the outside of thalamus?

A

External medullary lamina

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13
Q

What does the external medullary lamina separate?

A

Thalamus from nuclei along the outside

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14
Q

Ventral Anterior nucleus:

Class

Origin

Termination

Function

A

Relay

Globus pallidus

Prefrontal cortex

MOTOR FUNCTION

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15
Q

Ventral lateral nucleus:

Class

Origin

Termination

Function

A

Relay

Dentate nucleus

Motor cortex

MOTOR FUNCTION

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16
Q

Ventral posterior-ventroposteromedial nucleus:

Class

Origin

Termination

Function

A

Relay

Trigeminal

Sensory cortex

SENSORY OF HEAD&NECK

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17
Q

Ventral posterior- ventroposteriolateral nucleus:

Class

Origin

Termination

Function

A

Relay

Dorsal column medial lemniscus: SPinothalamic

Sensory cortex

SENSORY OF EVERYTHING BELOW HEAD&NECK

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18
Q

Ventral anterior nuclei of thalamus is associated with which ganglia

A

Basal ganglia

Globus pallidus is a part of basal ganglia

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19
Q

Ventral lateral nucleus of thalamus is associated with the_____

A

Cerebellum

Dentate nucleus is a part of the cerebellum

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20
Q

Ventroposterior nucleus-MEdial and lateral have a function of (Visceral/Somatic) sensation.

21
Q

Medial geniculate nucleus:

Class

Origin

Termination

Function

A

Relay

Inferior colliculus

Auditory cortex

HEARING FUNCTION

22
Q

Lateral geniculate nucleus:

Class

Origin

Termination

Function

A

Relay

Retina

Visual cortex

SEEING FUNCTION

23
Q

Anterior nucleus:

Class

Origin

Termination

Function

A

Association/Relay

Mammillary bodies

Cingulate cortex

LIMBIC (MEMORY FUNCTION)

24
Q

Mediodorsal nucleus or Dorsomedial:

Class

Origin

Termination

Function

A

Association/Relay

Olfactory cortex

Prefrontal cortex

THINKING/JUDGEMENT;MOOD FUNCTION (limbic associatio)

25
Lateral posterior/pulvinar nucleus: Class Origin Termination Function
Association Superior colliculus Visual Assoociation cortex & Parietal association cortex DRAWS ATTENTION TO STIMULI
26
Reticular nucleus: Class Origin Termination Function
Association Thalamus Thalamus “THE BOSS”-REGULATES INFORMATION COMING INTO AND GOING OUT OF THALAMUS
27
Intralaminar nucleus: Class Origin Termination Function
Diffuse Reticular formation Cerebral cortex&putamen ASCENDING RETICULAR ACTIVATION SYSTEM
28
Structures of the epithalamus
Pineal Body Habenula/habenular nucleus Stria Medullaris *named according to location
29
T/F: The pineal body is structure of the epithalamus and is related to the thalamus
False: NOT AT ALL
30
Together the MGN and LGN are reffered to as_____
Metathalamus
31
Small nuclei that lie inferior the thalamus
Metathalamus
32
Auditory Pathway
Cochlear nuclei —> lateral lemniscus —> inferior colliculus —> Medial geniculate N. —> Auditory cortex
33
What is the bundle of fibers going from the medial geniculate N to the auditory cortex in the auditory pathway
Auditory radiations
34
Visual pathway involving Lateral geniculate nucleus
Retina —> optic tract —> LGN —> visual cortex
35
What is the bundle of fibers going from LGN to visual cortex in the visual pathway ?
Optic radiations
36
The LGN/MGN are more (ventroposterior/ventromedial) than the VPL/ VPM
Ventroposterior
37
T/F: These nucleus can have different or multiple origin and termination
True
38
Which of the nuclei: 1. is the largest 2. Is derived from the same material lateral posterior and work with it 3. Functions to make sense of information
Pulvinar nuclei
39
Job of an association cortex
Relate new/current stimulus to old stimulus
40
T/F: The reticular nucleus is associated with reticular formation
False
41
Nucleus: 1. Regulates what comes into the thalamus 2. Separated from the thalamus on outside 3. Everything must there to get in or out of thalamus
Reticular nucleus
42
What separates the reticular nucleus from the thalamus?
External medullary Lamina
43
Which of the diffuse nuclei receives information for the reticular formation —> cerebral cortex —>. Putamen. Has an action of startle response
Intralaminar nucleus
44
Which of the diffuse nuclei receives information for the reticular formation —> cerebral cortex —>. Putamen. Has an action of startle response (important for survival
Intralaminar nucleus
45
Bundle of fibers that above thalamus that includes the Stria medullaris thalami, hebenula and pineal body
Epithalamus
46
Nucleus is epithalamus 1. Relay nucleus from limbic forebrain 2. Projects to midbrain 3. Function: negative feedback loops; task does not give you expected result so you stop task
Habenular/ habenula
47
Bundle of fibers that raves from the limbic forebrain to the habenula in the epithalamus
Stria medullaris thalami
48
Portion of epithalamus 1. Secrete melatonin; stimulated by lack of light 2. May/may not clear free radicals 3. Secretion function suppressed by sympathetic fibers
Pineal body

Neuroanatomy (8 decks)

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