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anatomy > Chapter 11 > Flashcards

Chapter 11 Flashcards

1
Q

3 functions of nervous system?

A

Sensory input
Integration
Motor output

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2
Q

CNS contains:

A

Brain and spinal cord

Integration and control center

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3
Q

PNS contains:

A

Nervous system outside CNS
Spinal nerves
Cranial nerves

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4
Q

Sensory (afferent) division:

A

Conveys impulses TO CNS

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5
Q

Motor (efferent) division:

A

Transmits impulse FROM cns

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6
Q

Somatic nervous system’s control of skeletal muscle

A

Voluntary

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7
Q

Autonomic nervous system subdivisions

A

Sympathetic

Parasympathetic

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8
Q

Astrocytes are

A

The most abundant and highly branches glial cells

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9
Q

Microglial cells can transform into

A

Macrophages

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10
Q

Ependymal cells line

A

Cerebrospinal fluid-filled CNS cavities

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11
Q

Oligodendrocytes form

A

Myelin sheaths around CNS nerve fibers

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12
Q

2 major neuralgia found in PNS

A

Satellite cells

Schwann cells

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13
Q

Clusters of neuron cell bodies found in CNS

A

Nuclei

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14
Q

Clusters of neuron cell bodies found in PNS

A

Ganglia

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15
Q

Bundles of neuron processes in CNS

A

Tracts

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16
Q

Bundles of neurons processes in PNS

A

Nerves

17
Q

Receptive region of neuron that conveys incoming message to cell body

A

Dendrites

18
Q

Conducting region of neuron that generates and transmits nerve impulses

A

Axon

19
Q

Anterograde movement is

A

Away from cell body

20
Q

Retrograde movement is

A

Toward cell body

21
Q

Whitish, protein-lipid substance

A

Myelin

22
Q

Function of myelin

A

Protect and insulate axon

Increase speed of nerve impulse transmission

23
Q

Myelination in PNS is formed by

A

Schwann cells (wrapped around axon like a jelly roll)

24
Q

Myelin sheath gaps are between

A

Adjacent Schwann cells

25
Q

Myelin sheaths in the CNS are formed by

A

Processes of oligodendrocytes

26
Q

Sensory (afferent) neurons transmit

A

Impulses from sensory receptors in skin/ organs TOWARD CNS

27
Q

Motor (efferent) neurons carry

A

Impulses FROM CNS to effectors (muscles and glands)

28
Q

Make up 99% of body’s neurons

A

Interneurons

anatomy (6 decks)

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