Chapter 11

Question 1

3 functions of nervous system?

Answer 1

Sensory input
Integration
Motor output

Question 2

CNS contains:

Answer 2

Brain and spinal cord

Integration and control center

Question 3

PNS contains:

Answer 3

Nervous system outside CNS
Spinal nerves
Cranial nerves

Question 4

Sensory (afferent) division:

Answer 4

Conveys impulses TO CNS

Question 5

Motor (efferent) division:

Answer 5

Transmits impulse FROM cns

Question 6

Somatic nervous system’s control of skeletal muscle

Answer 6

Voluntary

Question 7

Autonomic nervous system subdivisions

Answer 7

Sympathetic

Parasympathetic

Question 8

Astrocytes are

Answer 8

The most abundant and highly branches glial cells

Question 9

Microglial cells can transform into

Answer 9

Macrophages

Question 10

Ependymal cells line

Answer 10

Cerebrospinal fluid-filled CNS cavities

Question 11

Oligodendrocytes form

Answer 11

Myelin sheaths around CNS nerve fibers

Question 12

2 major neuralgia found in PNS

Answer 12

Satellite cells

Schwann cells

Question 13

Clusters of neuron cell bodies found in CNS

Answer 13

Nuclei

Question 14

Clusters of neuron cell bodies found in PNS

Answer 14

Ganglia

Question 15

Bundles of neuron processes in CNS

Answer 15

Tracts

Question 16

Bundles of neurons processes in PNS

Answer 16

Nerves

Question 17

Receptive region of neuron that conveys incoming message to cell body

Answer 17

Dendrites

Question 18

Conducting region of neuron that generates and transmits nerve impulses

Answer 18

Axon

Question 19

Anterograde movement is

Answer 19

Away from cell body

Question 20

Retrograde movement is

Answer 20

Toward cell body

Question 21

Whitish, protein-lipid substance

Answer 21

Myelin

Question 22

Function of myelin

Answer 22

Protect and insulate axon

Increase speed of nerve impulse transmission

Question 23

Myelination in PNS is formed by

Answer 23

Schwann cells (wrapped around axon like a jelly roll)

Question 24

Myelin sheath gaps are between

Answer 24

Adjacent Schwann cells

Question 25

Myelin sheaths in the CNS are formed by

Answer 25

Processes of oligodendrocytes

Question 26

Sensory (afferent) neurons transmit

Answer 26

Impulses from sensory receptors in skin/ organs TOWARD CNS

Question 27

Motor (efferent) neurons carry

Answer 27

Impulses FROM CNS to effectors (muscles and glands)

Question 28

Make up 99% of body’s neurons

Answer 28

Interneurons