Chapter 1

Question 1

Receive info and transmit it to other cells in the nervous system

Answer 1

Neuron’s

Question 2

Outside surface of a cell

Answer 2

Membrane

Question 3

Structure inside the cell that contains the chromosomes

Answer 3

Nucleus

Question 4

Battery of the cell

Answer 4

Mitochondria

Question 5

Sites at which the cells synthesize new protein molecules

Answer 5

Ribosomes

Question 6

Network of tubes that transport synthesized proteins to other locations

Answer 6

Endoplasmic reticulum

Question 7

The soma of a motor neuron is where?

Answer 7

Spinal cord

Question 8

Sensory neuron conducts how

Answer 8

From the senses in the skin to the spinal cord

Question 9

Short outgrowths of dendrites that increase surface area

Answer 9

Dendritic spines

Question 10

Cell body of a neuron

Answer 10

Soma

Question 11

Axon is covered by a protective layers called

Answer 11

Myelin sheath

Question 12

Interruptions in the myelin sheath

Answer 12

Nodes of ranvier

Question 13

Swells at the end of the branches on the axon

Answer 13

Pre synaptic terminal

Question 14

Afferent axon

Answer 14

Brings information into a structure

Question 15

Efferent axon

Answer 15

Carries info away from a structure

Question 16

When a cells dendrites and axons are totally contained within one structure

Answer 16

Interneuron or and intrinsic neuron

Question 17

Type of glia that wrap around the presynaptic terminals of a group of functionally related axons

Answer 17

Astrocytes

Question 18

What does an astrocyte do?

Answer 18

What does an astronauts do? Shield the presynaptic terminal from chemicals and enables the axons to send info in waves by taking up ions released from axons and then releasing them in waves. Guide the formation and elimination of synapses. Remove wares. Control the amount of blood flow in brain

Question 19

Tripartite synapse hypothesis

Answer 19

Tip of axon releases chemicals that cause neighboring astrocyte to release chemicals if it’s own, this magnifying or modifying the message to the next neuron

Question 20

Microglia

Answer 20

Remove waste materials, viruses, and fungi from brain. Proliferate after brain damage and in most brain diseases. Remove the weakest synapse during learning.

Question 21

Oligodendrocytes

Answer 21

Build myelin sheaths the surround and insulate certain vertebrate axons and provide nutrients in the brain and spinal cord

Question 22

Schwann cells

Answer 22

Build myelin sheaths and provide nutrients in the periphery of the body

Question 23

Radial glia

Answer 23

Guide the migration of neuron’s and their axons and dendrites during embryonic development then they differentiate into neuron’s or other glia cells

Question 24

Mechanism that excludes most chemicals from the vertebrate bran is know as

Answer 24

The blood brain barrier