Chap 8: Nervous System WS

Question 1

Consists of the brain and spinal cord

Answer 1

CNS

Question 2

Transmits action potentials from sensory organs to CNS.

Answer 2

Afferent Division

Question 3

Nerves and ganglia outside the CNS

Answer 3

PNS

Question 4

Subdivision of the efferent division that transmits action
potentials from the CNS to skeletal muscle only

Answer 4

Somatic motor nervous system

Question 5

Subdivision of the efferent division that transmits action
potentials to smooth muscle, cardiac muscle, or glands; includes sympathetic and parasympathetic divisions

Answer 5

Autonomic nervous system

Question 6

Location of the nucleus and source of information for protein
synthesis.

Answer 6

Cell body

Question 7

Usually receives information and transmits it to the cell body

Answer 7

Dendrite

Question 7

Areas of rough endoplasmic reticulum concentration in the cell
body

Answer 7

Nissl bodies

Question 8

Branch of an axon

Answer 8

Collateral axon

Question 8

Insulating layer of cells around an axon

Answer 8

Myelin sheath

Question 9

Long cell process from the cell body; conducts action potentials

Answer 9

Axon

Question 10

Neuron with several dendrites and one axon; most efferent
neurons

Answer 10

Multipolar

Question 11

Neuron with one dendrite and one axon; found in the eye and
nose

Answer 11

Bipolar

Question 12

Neuron with single process that functions as an axon and a
dendrite; most afferent neurons.

Answer 12

Unipolar

Question 13

Produce and circulate cerebrospinal fluid in the CNS.

Answer 13

Ependymal cells

Question 14

Participate with blood vessel endothelium to form a
permeability barrier in the CNS between blood and nerve cells

Answer 14

Astrocytes

Question 15

Form myelin sheaths around axons in the PNS

Answer 15

Schwann cells

Question 15

Form myelin sheaths around axons in the CNS

Answer 15

Oligodendrocytes

Question 15

Help remove bacteria and cell debris from the CNS

Answer 15

Microglia

Question 16

Axons are surrounded by the (1) of oligodendrocytes in the
(2) or Schwann cells in the (3) . (4) rest in indentations of
the oligodendrocytes or Schwann cells, whereas (5) have
cell processes repeatedly wrapped around them. In
myelinated axons, gaps in the myelin sheath called (6) can
be seen between the oligodendrocyte segments or between
Schwann cells.

Answer 16

1. Cell processes
2. CNS
3. PNS
4. Unmyelinated axons
5. Myelinated axons
6. Nodes of Ranvier

Question 17

Gray matter on the surface of the brain

Answer 17

Cortex

Question 18

Color of groups of neuron cell bodies and their dendrites

Answer 18

Gray matter

Question 19

Cluster of gray matter located deep in the brain

Answer 19

Nucleus

Question 20

Cluster of neuron cell bodies in the PNS

Answer 20

Ganglion

Question 21

Color produced by bundles of axons with their myelin sheaths

Answer 21

White matter

Question 22

Conduction pathway composed of white matter in the CNS

Answer 22

Nerve tract

Question 22

Axon end that interacts with other neurons or effector organs

Answer 22

Postsynaptic membrane

Question 23

Bundle of axons and its connective tissue sheath in the PNS

Answer 23

Nerves

Question 24

Membrane of the dendrite or effector cell

Answer 24

Postsynaptic membrane

Question 25

Space separating the presynaptic terminal and postsynaptic membrane

Answer 25

Synaptic cleft

Question 26

General term for chemical substances released from the presynaptic terminal.

Answer 26

Neurotransmitters

Question 27

Structures in which the neurotransmitter is stored

Answer 27

Synaptic vesicles

Question 28

Condition in postsynaptic cell if potassium or chloride channels open

Answer 28

Hyperpolarized

Question 29

Most common neurotransmitters

Answer 29

Acetylcholine and norepinephrine

Question 30

Enzyme that breaks down acetylcholine soon after its release

Answer 30

Acetylcholinesterase

Question 31

Part of the peripheral nervous system with 12 pairs of nerves

Answer 31

Cranial

Question 32

Part of the peripheral nervous system with 31 pairs of nerves.

Answer 32

Spinal

Question 33

Fibers that collect information and carry it to the CNS

Answer 33

Afferent

Question 34

Part of the central nervous system housed within the cranial vault

Answer 34

Brain

Question 34

Fibers that relay information from the CNS to various parts of the body

Answer 34

Efferent

Question 35

Part of the central nervous system from the foramen magnum to the second lumbar vertebra

Answer 35

Spinal cord

Question 36

Part of the neuron (nerve cell) that contains the nucleus; site of general cell functions

Answer 36

Cell body

Question 36

Part of the central nervous system containing the brainstem, diencephalon, cerebrum and cerebellum

Answer 36

Brain

Question 37

Receive action potentials and conduct them toward the cell body

Answer 37

Dendrites

Question 38

Conducts action potentials away from the cell body.

Answer 38

Axon

Question 39

Support cells of the nervous system; function to nourish, protect and insulate the neurons

Answer 39

Neuroglia