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BIOLOGY 3RD QUARTER > N-Nerv-vous S-syst-tem > Flashcards

N-Nerv-vous S-syst-tem Flashcards

1
Q

coordinates all the activities of the body carrying messages from one cell to another

A

nervous system

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2
Q

basic structural unit of this system??

A

neuron or nerve cell

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3
Q

each neuron consists of???

A

cell body, dendrite and axon

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4
Q

where nucleus is located

A

cell body

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5
Q

consists of nerve fibers that carry impulses toward the cell blody

A

dendrites

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6
Q

single nerve fiber that carries impulses away from cell body

A

axon

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7
Q

covers the axon that insulates and maintains the axon; helps in transporting impulses faster

A

myelin sheath

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8
Q

areas without myelin sheath

A

Nodes of Ranvier

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9
Q

three types of nerve fibers

A

afferent, efferent, associative

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10
Q

nerve fibers: from body to brain and spinal cord

A

afferent

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11
Q

nerve fibers: from brain and spinal cord to body

A

efferent

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12
Q

nerve fibers that carry impulses from the sensory neuron to motor neruron

A

associative

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13
Q

2 main divisions of the nervous system

A

central nervous system and peripheral nervous system

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14
Q

this division of the nervous system consists of the brain and spinal cord

A

CNS

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15
Q

CNS is responsible for???

A

sensory activities, storing memories and emotions

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16
Q

this division of the nervous system consists of the cranial and spinal nerves

A

peripheral nervous system

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17
Q

PNS is responsible for??

A

bringing messages to and from CNS from and to the rest of the body

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18
Q

2 divisions of PNS

A

autonomic and somatic

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19
Q

somatic ns is responsible for??

A

voluntary movements

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20
Q

autonomic ns is responsible??

A

involuntary movements

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21
Q

2 divisions autonomic ns

A

sympathetic and parasympathetic

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22
Q

sympathetic ns is responsible for??

A

flight and fight

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23
Q

parasympathetic ns is responsible for??

A

rest and relax actions

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24
Q

mass of nerve tissue

A

brain

25
Q

largest and highest section

A

cerebrum

26
Q

this separate the 4 lobes of the cerebrum

A

convolutions or folds

27
Q

4 lobes??

A

parietal, temporal, frontal, and occipital

28
Q

lobe responsible for impulse control, behavior and motor function

A

frontal lobe

29
Q

lobe responsible for hearing and speech

A

temporal lobe

30
Q

lobe responsible for handwriting

A

parietal lobe

31
Q

lobe responsible for sight. yeah.

A

occipital lobe

32
Q

known as the mini-brain

A

cerebellum

33
Q

cerebellum is responsible for??

A

muscle coordination; balance and posture; muscle tone

34
Q

section between cerebrum and midbrain

A

diencephalon

35
Q

2 structures of diencephalon

A

thalamus and hypothalamus

36
Q

directs sensory impulses to the cerebrum

A

thalamus

37
Q

for emotions and feelings and yeah.

A

hypothalamus

38
Q

responsible for conducting impulses between brain parts and certain eye and auditory reflexes

A

midbrain

39
Q

responsible for conducting message to other parts of brain; for chewing, breathing yeah

A

pons

40
Q

connects with spinal cord and is responsible for heartbeat, swallowing, coughing

A

medulla oblongata

41
Q

for reflex actions

A

spinal cord

42
Q

parts of the brain stem??

A

midbrain, pons and medulla oblongata

43
Q

3 membranes that cover and protect the brain and spinal cord

A

dura mater; arachnoid membrane; pia mater; (WESTFIELD SCHOOL, OUR DEAR ALMA MATER-)

44
Q

spaces or furrows of brain

A

sulci

45
Q

this membraine is attached to the brain and contains blood vessels that nourished the nerve tissue

A

pia mater

46
Q

elevate regions

A

gyri

47
Q

speed of impulses

A

110 milliseconds

48
Q

space between axons

A

synapses

49
Q

special chemicals that allow impulses to pass from neuron to another

A

neurotransmitters

50
Q

number of pairs of cranial nerves

A

12

51
Q

number of pairs of spinals nerves

A

31

52
Q

for cushion and mechanical support

A

Cerebrospinal fluid

53
Q

areas of temporal lobe

A

Broca’s area and Wenicke’s area

54
Q

area responsible for language and comprehension

A

Wernicke’s area

55
Q

area responsible for motor speech

A

Broca’s area

56
Q

connects the 2 hemispheres of the brain

A

Corpus callosum

57
Q

4 divisions of the spinal cord

A

Cervical; Thoracic; Lumbar; Sacral

58
Q

end of spinal cord; like a horsetail

A

cauda equina

BIOLOGY 3RD QUARTER (6 decks)

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