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BI 232 Wk 1 Ch 14 & Ex 9 Brain > Ch 14 Hindbrain/Midbrain > Flashcards

Ch 14 Hindbrain/Midbrain Flashcards

1
Q

Medulla oblongata function

A

relay sensory information, controls heart rate, regulates blood pressure, motor control

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2
Q

Regions of the medulla oblongata

A

pyramids, anterior median fissure, pyramidal decussation

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3
Q

Pyramid function

A

sends information from one side of the brain to the other

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4
Q

Decussation definition

A

crossing over of neural pathways from one side to the other

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5
Q

Cardiovascular center function

A

regulate heart rate and force of contraction

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6
Q

Respiratory center function

A

set the basic pace of respiratory movements

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7
Q

Pons function

A

respiratory control, sleep regulation, relay station for brain signals

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8
Q

Midbrain function

A

sensory processing, motor control, connects brain regions

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9
Q

Superior colliculi function

A

visual reflex

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10
Q

Inferior colliculi function

A

auditory reflex

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11
Q

Substantia nigra function

A

relays inhibitory signals to the thalamus to help smooth out our movements

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12
Q

What does the substantia nigra contain a lot of?

A

melanin

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13
Q

What does the red nucleus contain a lot of?

A

blood vessels

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14
Q

Red nucleus function

A

connections to the cerebellum allow collaboration in fine motor control

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15
Q

What houses the red nucleus?

A

tegmentum

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16
Q

Function of peduncles

A

connection of brain regions

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17
Q

What does the cerebral peduncles connect

A

cerebrum to the brainstem

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18
Q

How many cerebellar peduncles are there?

A

3; superior, middle, and inferior

19
Q

What does the superior cerebellar peduncles connect?

A

cerebellum to midbrain

20
Q

What does the middle cerebellar peduncles connect?

A

cerebellum to pons

21
Q

What does the inferior cerebellar peduncles connect?

A

cerebellum to medulla oblongata

22
Q

Where is reticular formation

A

pons, midbrain, and medulla

23
Q

Reticular formation function

A

contains nuclei and centers that regulate vital autonomic functions

24
Q

Cerebellum functions

A

motor skill memory, coordinate movement, send corrective information to motor areas of cerebrum

25
Q

Folia definition

A

folds in the cerebellum

26
Q

Arbor vitae definition

A

branches of white matter in the cerebellum

27
Q

Vermis definition

A

connects left and right hemispheres of the cerebellum

28
Q

Ataxia definition

A

lack of voluntary coordination of muscle movements due to alcohol

29
Q

Autonomic centers definition

A

neural regions controlling involuntary body functions

30
Q

3 relay stations

A

olivary nucleus, cuneate nucleus, gracile nucleus

31
Q

What are relay stations?

A

neural structures that receive sensory signals, process and transfer information, and route signals to appropriate brain regions

32
Q

What does the brainstem consist of?

A

Medulla oblongata, pons, midbrain

33
Q

Descending tracts definition

A

carry motor commands from higher centers to nuclei of cranial or spinal nerves

34
Q

Ascending tracts definition

A

carry sensory information from brainstem nuclei to the thalamus

35
Q

Transverse cerebellar fibers function

A

interconnect cerebellar hemispheres

36
Q

Apneustic and pneumotaxic centers function

A

adjust activities of the respiratory rhythmicity centers in the medulla oblongata

37
Q

Nuclei of cranial nerves V-VIII function

A

relay sensory information and issue somatic motor commands

38
Q

Somatic definition

A

relating to the body

39
Q

What 2 parts make up the tectum?

A

inferior and superior colliculi

40
Q

Cerebral crus function

A

connects cerebrum to pons

41
Q

Cerebral aqueduct function

A

cerebrospinal fluid circulation

42
Q

Reticular activating system (RAS) function

A

controls alertness and sleep-wake cycles; determines which sounds cause alertness

43
Q

Decussation pyramid function

A

contralateral motor control

BI 232 Wk 1 Ch 14 & Ex 9 Brain (12 decks)

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