Chapter 2

Question 1

Basic functional unit of the nervous system. Integrates sensory information. Modulates peripheral activity

Answer 1

Neuron

Question 2

Supports cells of the brain. Provides insulation and nourishment to neurons

Answer 2

Glia

Question 3

Major site for protein synthesis

Answer 3

Rough Endoplasmic reticulum

Question 4

Made of segments of tubulin. Polymerization regulated by microtubule associated proteins (MAPs)

Answer 4

Microtubule

Question 5

Made of actin. Forms a mesh web along the membrane

Answer 5

Microfilaments

Question 6

Very strong. Not hollow

Answer 6

Neurofilaments

Question 7

Unique to neurons. Unique composition. Specialized to carry information over distances. No rough ER. Few free ribosomes

Answer 7

Axon

Question 8

ATP dependent. Anterograde transport (Soma to Terminal)

Answer 8

Kinesin

Question 9

Retrograde Transport (Terminal to Soma)

Answer 9

Dynein

Question 10

Receives information from other neurons via synapses

Answer 10

Dendrites

Question 11

Long axons that go from one area to another

Answer 11

Golgi Type I

Question 12

Short axons that make local projections

Answer 12

Golgi Type II

Question 13

Most numerous glia in the brain. Fills spaces between neurons

Answer 13

Astrocytes

Question 14

Insulates axons

Answer 14

Myelinating Glia

Question 15

Region where the axonal membrane is exposed

Answer 15

Node of Ranvier

Question 16

Line the fluid filled cavities within the CNS (ventricles). Contributes to the formation of cerebral spinal fluid

Answer 16

Ependymal Cells

Question 17

Immune cell of the CNS. Acts as a phagocyte to remove debris left by dead or degenerating neurons and glia. Becomes active during an active infection in the CNS

Answer 17

Microglia

Question 18

Microscopic study of the structure of tissues

Answer 18

Histology

Question 19

Uses antibodies to target a specific protein (a second antibody is used to visualize the protein)

Answer 19

Immunohistochemistry

Question 20

A gene encoding a fluorescent protein is introduced under the control of a cell type/protein specific gene promotor

Answer 20

Genetic labeling