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Health Alterations > Unit 3 > Flashcards

Unit 3 Flashcards

1
Q

myelin sheath

A

conducts nerve impulses quickly

protective membrane that surrounds nerve fibers

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2
Q

acetylcholine

A

released from sympathetic and parasympathetic

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3
Q

microglia

A

removes debris in central nervous system

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4
Q

synapse

A

region between adjacent neurons

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5
Q

interneurons

A

transmit impulses from neuron to neuron

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6
Q

reticular activating system

A

helps maintain wakefulness

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7
Q

afferent pathway

A

ascending pathways

sensory impulses carried toward central nervous system

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8
Q

efferent

A

descending pathways

away from central nervous system

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9
Q

cranial nerve VII

A

Smiling

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10
Q

somatic

A

voluntary control

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11
Q

cerebellum

A

balance

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12
Q

serotonin

A

mood, anxiety and sleep

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13
Q

spatial summation

A

combined effect of impulses into a single neuron

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14
Q

oligodendroglia

A

deposit myelin sheaths within the central nervous system

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15
Q

dermatomes

A

area of skin that receives nerve innervation from specific spinal nerve

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16
Q

autonomic

A

sympathetic and parasympathetic

17
Q

gray matter

A

contains cell bodies of neurons

18
Q

Normal CSF

A

0 red blood cells

19
Q

three major divisions of the brain

A

forebrain
midbrain
hindbrain

20
Q

blood brain barrier

A

sselectively inhibits substances from entering he brain

21
Q

nissl substance

A

protein synthesis

22
Q

basal ganglia system

A

stabilizes motor movements

23
Q

changes in older adult

A

increased permeability of blood brain barrier

24
Q

white matter

A

myelinated nerve fibers

25
Q

posterior column

A

fine touch sensation

two point discrimination

26
Q

meninges surrounding brain

A

dura mater

arachnoid

27
Q

peripheral nervous system

A

cranial nerves
spinal nerves
somatic nervous system

28
Q

parasympathetic activity

A

reduced heart rate

29
Q

chord plexus

A

cerebrospinal fluid

30
Q

axon

A

away from neuron

31
Q

broca

A

speech

small area

32
Q

huntington disease

A

affects basal ganglia

Health Alterations (1 decks)

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