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Functional Anatomy I > Nervous System > Flashcards

Nervous System Flashcards

1
Q

Function of Nervous System

A

controls, stimulates, and coordinates all other body movements

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2
Q

Neuron

A

fundamental unit of nervous tissue

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3
Q

Dendrites

A

fiber branches that receive impulses from other parts of the nervous system and bring the impulses toward the cell body

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4
Q

Axons

A

transmit impulses away from the cell body

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5
Q

Myelin

A

fatty covering over axons

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6
Q

node of Ranvier

A

break in the myelin every half millimeter

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7
Q

Gray matter

A

areas that contain mostly UNmyelinated fibers

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8
Q

White matter

A

areas that contain mostly MYELINATED fibers

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9
Q

Nerve fiber

A

conductor of impulses from the neuron

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10
Q

Synapse

A

small gap between neurons involving very complex physiological actions

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11
Q

Tract

A

group of myelinated nerve fibers within the CNS that carries a specific type of information

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12
Q

Motor (efferent) neuron

A

large cell body & multibranched dendrites, long axon
Located within the ANTERIOR horn of the spinal cord
Conducts impulses from the spinal cord to the periphery

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13
Q

Sensory (afferent) neuron

A

dendrite arises in the skin
Runs into the POSTERIOR root ganglion
Impulses from periphery to spinal cord

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14
Q

CNS

A

brain & spinal cord

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15
Q

Brain components

A

cerebrum
brainstem
cerebellum

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16
Q

Cerebrum

A

largest, main portion of the brain

Highest mental functions

17
Q

Cortex

A

outer coating that is many cell layers deep, divided into four lobes

18
Q

Lobes of the Cortex

A

Frontal lobe
Occipital lobe
Parietal lobe
Temporal lobe

19
Q

Frontal lobe

A

personality

motor movement & expressive speech

20
Q

Occipital lobe

A

vision and recognition of size, shape, & color

21
Q

Parietal lobe

A

gross sensation (touch & pressure)

22
Q

Temporal Lobe

A

behavior, hearing, language reception, and understanding

23
Q

Thalamus

A

relay station for body sensations

24
Q

Hypothalamus

A

hormone function and behavior

25
Q

Basal ganglia

A

coordination of motor movement

26
Q

Brainstem

A

midbrain
pons
medulla oblongata

Functional Anatomy I (6 decks)

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