Week 2: The Midbrain Structures Location and Functions Flashcards

1
Q

The superior colliculi is located in the:

A

rostral tectum

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2
Q

The inferior colliculi is located in the:

A

caudal tectum

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3
Q

what structure is located specifically in the rostral tectum?

A

superior colliculi

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4
Q

what structure is located specifically in the caudal tectum?

A

inferior colliculi

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5
Q

what is the function of the superior colliculi?

A

it is a visual relay system

helps relay connections that correlate head and neck movements

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6
Q

what is the function of the inferior colliculi?

A

auditory relay station

helps relay connections from peripheral auditory structures to cortical auditory regions

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7
Q

What structures are located in the rostral tegmentum?

A

oculomotor (CN 3) nuclei
ventral tegmental area
red nuclei

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8
Q

what structures are located in the caudal tegmentum?

A

trochlear (CN 4) nuclei
superior cerebellar peduncle
raphe nuclei

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9
Q

What two structures located in the caudal tegmentum can also be located in the Rostral Pons?

A

superior cerebellar peduncle

raphe nuclei

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10
Q

where can i locate the raphe nuclei?

A

Caudal tegmentum and rostral pons

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11
Q

where can i locate the superior cerebellar peduncle?

A

the caudal tegmentum and the rostral pons

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12
Q

where can i locate the trochlear nuclei?

A

caudal tegmentum

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13
Q

where can i locate the oculomotor nuclei?

A

rostral tegmentum

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14
Q

where can i locate the red nuclei?

A

rostral tegmentum

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15
Q

where can i locate the ventral tegmental area?

A

rostral tegmentum

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16
Q

What is the function of the ventral tegmental area?

A

plays a role in reward system (reinforcing behavior) with projections to the limbic system and cortex
major dopamine producing area

17
Q

Which structure plays a role in reward system and has projections to the limbic system and cortex?

A

ventral tegmental area

18
Q

what are the 7 structures (that we have to identify) located in the tegmentum?

A
substantia nigra
ventral tegmental area
red nuclei
oculomotor nuclei
trochlear nuclei
superior cerebellar peduncle
raphe nuclei
19
Q

what is the function of the substantia nigra?

A

major dopamine producing and storage area

20
Q

The substantia nigra is a part of the _________ _________ and is involved in ___________.

A

basal ganglia; movement

21
Q

The function of the red nuclei is:

A

motor coordination

motor control for flexor muscle groups

22
Q

what is the function of the superior cerebellar peduncle?

A

it is relay station to the cerebellum

23
Q

what is the function of the raphe nuclei?

A

Major serotonin producing neurons in the brain.

24
Q

What structures are located in the basis pedunculi?

A

Crus Cerebri and the cerebral peduncle

25
The Cerebral peduncle is made up of the:
basis pedunculi and the substantia nigra
26
The function of the Crus Cerebri is:
large bundles of somatotopically organized axons containing fibers from motor pathways
27
The cerebral peduncle is located in the
basis pedunculi and the ventral tegmentum
28
what is the function of the cerebral peduncle?
contains large descending motor nerve tracts
29
The cerebral peduncles are ___ stalks that attach the cerebrum to the _________ at the ________surface of the membrane that arise from the ventral _____
2; brainstem; ventral; pons
30
Periaqueductal Gray is found in which two sections of the midbrain?
tectum and tegmentum
31
________ matter surrounds the cerebral aqueduct.
gray
32
The periaqueductal gray plays a major role in:
pain modulation (inhibition), autonomic regulation and emotion