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BIO100 > Topic 5f - Nervous system > Flashcards

Topic 5f - Nervous system Flashcards

1
Q

Properties of neurons…?

A

uneven distribution of ions inside & outside of cell membrane -> membrane potential

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2
Q

Inside of cell is normally…?

A

-vely charged (high [K+], low [Na+]

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3
Q

Membrane potential maintained by…?

A

Na+/K+-ATPase pump

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4
Q

What is the refractory period?

A

time for neurons to recover after AP

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5
Q

Resting potential = ?

A

~ -70mV

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6
Q

Threshold = ?

A

~ -50mV

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7
Q

Channels during resting potential…?

A

resting K+ channel = open
voltage-gated Na+ channel = closed
voltage-gated K+ channel = closed

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8
Q

Channels during action potential…?

A

voltage-gated Na+ channel = opens -> Na+ rushes into cell

voltage-gated K+ channel = closed

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9
Q

Channels during resting potential restoration…?

A

voltage-gated K+ channel = open -> K+ move out of cells

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10
Q

Neurotransmitter ACh & GABA…?

A

ACH: muscle control - excitatory
GABA: inhibitory

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11
Q

What is cephalisation?

A

concentration of neurons in the head region

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12
Q

White matter contains…?

A

myelinated axons

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13
Q

Gray matter contains…?

A

cell bodies of motor neurons & interneurons

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14
Q

Dorsal root =?

A

signals going into spinal cord

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15
Q

Ventral root = ?

A

signals leaving spinal cord

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16
Q

Medulla controls ?

A

ANS - breathing, HR, etc.

17
Q

Cerebellum controls?

A

coordination of movement & motor learning

18
Q

Cerebrum controls?

A

processing sensory info & speech, memory & higher intellectual function

19
Q

Corpus callosum contains?

A

bundles of neurons connecting left & right hemispheres

20
Q

Limbic system…?

A

no. of structures in forebrain

controls emotions

21
Q

Order of Mid & hind brain?

A

midbrain, hind brain, spinal cord

22
Q

What comprises hindbrain?

A

Cerebellum
Pons
Medulla

23
Q

Frontal lobe controls …?

A

higher intellectual functions & speech motor area

24
Q

Parietal lobe controls…?

A

sensory association area

25
Q

Temporal lobe…?

A

auditory & memory

26
Q

Occipital lobe…?

A

visual

BIO100 (25 decks)

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