Nervous System

Question 1

Neuroglia

Answer 1

Specialized cells produce myelin, communicate between cells, provide structural support

Question 2

Dendrites

Answer 2

Process of neuron that receives input from other neurons

Question 3

Axon

Answer 3

Nerve fiber conducts nerve impulse away from cell body

Question 4

Nerve impulse

Answer 4

Depolarization and repolarization along a nerve fiber

Question 5

Nerves

Answer 5

Bundle of nerve fibers

Question 6

Synapse

Answer 6

Functional connection between axon of one neuron and dendrite or cell body of another neuron or membrane of other cell type

Question 7

Synaptic cleft

Answer 7

Narrow extracellular space between presynaptic and postsynaptic neurons

Question 8

Neurotransmitter

Answer 8

Chemicals that an axon end secretes that stimulates a muscle fiber yo contract or a neuron to fire an impulse

Question 9

CNS

Answer 9

Brain and spinal cord

Question 10

PNS

Answer 10

Parts of nervous system outside central nervous system

Question 11

Sensory receptors

Answer 11

Specialized structure associated with peripheral end of sensory neuron specific to detecting a particular sensation and triggering a nerve impulse in response

Question 12

Effectors

Answer 12

Muscle or gland that effects change in body

Question 13

Somatic nervous system

Answer 13

Motor pathways of peripheral nervous system that lead to skin and skeletal muscles

Question 14

Autonomic nervous system

Answer 14

Part of nervous system that controls viscera

Question 15

Cell body

Answer 15

Part of nerve cell that includes cytoplasmic mass and a nucleus and from which nerve fibers extend

Question 16

Neurofibrils

Answer 16

Fine cytoplasmic thread that extends from the cell body into the process of neuron

Question 17

Schwann cells

Answer 17

Type of Neuroglia that surrounds fiber of periodontal nerve forming neurilemma and myelin

Question 18

Myelin

Answer 18

Fatty material forms sheathlike covering around certain nerve fibers

Question 19

Neurilemma

Answer 19

Sheath on certain nerve fibers formed by Schwann cells

Question 20

Nodes of Ranvier

Answer 20

Short region of exposed axon between Schwann cells on neurons of PNS

Question 21

Oligodendrocyte

Answer 21

Type of Neuroglia in CNS that produces myelin

Question 22

Astrocytes

Answer 22

Type of Neuroglia that connects neurons to blood vessels and provides growth factors

Question 23

Microglia

Answer 23

Neuroglia that supports neurons and phagocytize

Question 24

Ependyma

Answer 24

Membrane composed of Neuroglial cells that lines ventricles of brain

Question 25

Bipolar neuron

Answer 25

Nerve cell whose cell body has only one axon and one dendrite

Question 26

Multipolar neuron

Answer 26

Nerve cell that has many processes emanating from its cell body

Question 27

Unipolar neuron

Answer 27

Neuron that had a single nerve fiber extending from its cell body

Question 28

Pre synaptic neuron

Answer 28

One of two adjacent neurons transmitting an impulse | Cell on sending side

Question 29

Post synaptic neuron

Answer 29

One of two adjacent neurons transmitting an impulse | Cell on receiving side

Question 30

Myelinated axons

Answer 30

Axons with myelin sheaths

Question 31

Unmyelinated axons

Answer 31

Lack myelin sheaths

Question 32

Nissl bodies

Answer 32

Membranous packets consist mainly of rough endoplasmic reticulum

Question 33

Receptor proteins

Answer 33

Receive neurotransmitters | Located on dendrites

Question 34

Neuron

Answer 34

Nerve cell