Chapter 8 The Nervous System

Question 1

Forms the cerebrospinal fluid

Answer 1

Choroidplexus

Question 2

Type of neuron; has a single process emerging from cell body; axon functions unique

Answer 2

Unipolar neuron

Question 3

Protective membranes that surround the brain

Answer 3

Meninges

Question 4

Central nervous system helper cells; astrocytes are one

Answer 4

Neuroglia

Question 5

Encloses the third ventricle of the brain; acts as a relay station

Answer 5

Thalamus

Question 6

Also called the voluntary nervous system

Answer 6

Somatic division

Question 7

line the central cavities of brain and spinal cord

Answer 7

Ependymal

Question 8

Type of matter that consists of mostly unmyelinated fibers

Answer 8

Gray matter

Question 9

Collection of spinal nerves; term meaning “horse’s tail”

Answer 9

Caudaequina

Question 10

Produce fats insulating coverings in the central nervous system

Answer 10

Oligodendrocytes

Question 11

Cells that form myelin sheaths in peripheral nervous system

Answer 11

Schwann cells

Question 12

Elevated ridges of brain tissue

Answer 12

Gyri

Question 13

Motor division of PNS that conveys impulses from the central nervous system to muscles and glands

Answer 13

Efferent division

Question 14

Most common type of neuron

Answer 14

Multipolar neuron

Question 15

Most superior pat of brain

Answer 15

Cerebrum

Question 16

Metabolic center of neuron

Answer 16

Cell body

Question 17

Function of nervous system that processes and interprets sensory information

Answer 17

Integration

Question 18

Type of matter that consists of dense myelinated fibers

Answer 18

White matter

Question 19

The inward rush of sodium ions in a neuron causes this event

Answer 19

Depolarization

Question 20

Spider-like phagocytes disposing of debris in central-nervous system

Answer 20

Microglia

Question 21

Bundles of nerve fibers running through the peripheral nervous system

Answer 21

Nerves

Question 22

Specialized speech area of the brain

Answer 22

Broca’s area

Question 23

Tiny gap that separates axon-terminal from the next neuron

Answer 23

Synapse

Question 24

The “all or nothing” response of a nerve

Answer 24

Nerve impulse

Question 25

Rounded structure below the midbrain; important in breathing control

Answer 25

Pons

Question 26

Parts of neuron that convey incoming messages to the cell body

Answer 26

Dendrites

Question 27

Bundle of nerve fibers

Answer 27

Fascicle

Question 28

Part of a neuron that conveys incoming message away from the cell body

Answer 28

Axon

Question 29

Abbreviation for nervous system that includes the brain and spinal cord

Answer 29

CNS

Question 30

nervous system division that includes the sympathetic and parasympathetic

Answer 30

Autonomic division

Question 31

Tough fibrous sheath around the whole nerve

Answer 31

Epineurium

Question 32

Reflexes that occur all over the body including the central and peripheral nervous system

Answer 32

Reflex arc

Question 33

Bundles of nerve fibers running through the central nervous system

Answer 33

Tracts

Question 34

Term meaning “neuron husk”

Answer 34

Neurilemma

Question 35

Type of neuron; rare-in adults; consists of axon and dendrite

Answer 35

Bipolar neuron

Question 36

Star-shaped cells; half of all neural tissue; mop-up leaked potassium ions in brain

Answer 36

Astrocytes

Question 37

Functional division of PNS that conveys impulses to the central nervous system from sensory receptor

Answer 37

Afferent division

Question 38

Abbreviation for nervous system that includes the nerves that extend from the brain and spinal cord

Answer 38

PNS