Nervous system structure Flashcards

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1
Q

21 days after conception, what develops?

A

The neural tube

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2
Q

What does the neural tube become

A

the brain and spinal cord

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3
Q

What is the acronym for brain development?

A

Tel, di, mes, met, my

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4
Q

Progenitor cells

A

Stem cells that become braincells

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5
Q

Symmetrical division

A

Turns 1 progenitor cell into 2

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6
Q

Asymmetrical division

A

1 progenitor cell and one brain cell (radial glia) become astrocytes

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7
Q

Apoptosis

A

Lots of neural connections form in the brain. Some needed, some not. By age 14, they send a signal to die if they aren’t needed

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8
Q

What is the forebrain made up of?

A

The telencephalon and diencephalon

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9
Q

What is the telencephalon made up of?

A

The cerebral cortex, corpus callosum, and the limbic system

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10
Q

Cerebral cortex

A

has sulci, fissures, and gyri (small grooves, large grooves, and budges). Is compromised of gray matter

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11
Q

4 lobes of cerebral cortex

A

Frontal (Planning, organization, etc.) Parietal (Sensory) Temporal (process sensory, memory) Occipital ( visual)

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12
Q

Right hemisphere of cerebral cortex

A

synthesizes info (drawing, reading maps, etc.)

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13
Q

Left hemisphere of cerebral cortex

A

analyzes info (Language and behavior)

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14
Q

corpus callosum

A

connects 2 hemispheres and allows for 2 sides to work together quickly

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15
Q

Limbic system

A

Collection of regions that are involved in emotions, learning, and memory

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16
Q

Areas involved in limbic system

A

Hippocampus, amygdala, fornix, mammillary bodies, anterior thalamic nuclei, and parts of the hypothalamus

17
Q

Limbic system: hippocampus

A

Learning/ memory

18
Q

Limbic system: amygdala

A

Emotions

19
Q

Limbic system: fornix

A

Long-term memories

20
Q

Limbic system: Mammillary bodies

A

Learning/memory, relays info to other regions

21
Q

Limbic system: anterior thalamic nuclei

A

Alertness and learning

22
Q

Limbic system: parts of hypothalamus

A

Regulates stress and endocrine functioning

23
Q

Basal ganglia

A

movement and some executive functioning

24
Q

What makes up the midbrain?

A

The mesencephalon

25
Q

What makes up the mesencephalon?

A

The tectum, the tegmentum, periaqueductal gray matter, red nucleus and substentia nigra

26
Q

What makes up the diencephalon?

A

The thalamus and hypothalamus

27
Q

Thalamus

A

relay station. Sends info to the cortex, primarily sensory info.

28
Q

Hypothalamus

A

Controls the autonomic nervous system

29
Q

Tectum

A

Superior colliculi-visual Inferior colliculo-auditory

30
Q

Tegmentum

A

Reticular formation: sleep/wake

31
Q

Periaqueductal gray matter

A

automatic behavior

32
Q

Red nucleus & substentia nigra

A

Movement

33
Q

What makes up the hindbrain?

A

The metencephalon

34
Q

What makes up the metencephalon

A

The cerebellum and the pons

35
Q

Cerebellum

A

The “little brain”, has 2 hemispheres, coordinates movement

36
Q

Pons

A

Sleep/wake