Nervous System

Question 1

The nervous system _____ and _____ all the functions of the body.

Answer 1

1. Controls
2. Coordinates

Question 2

The nervous system consists of two main sub divisions:

Answer 2

1. Central nervous system
2. Peripheral nervous system

Question 3

A _____ is the scientific name for a nerve cell.

Answer 3

1. Neuron

Question 4

Neurons consist of three basic structures:

Answer 4

1. Cell body
2. Dentrites
3. Axon

Question 5

The cell body contains _____ and the _____.

Answer 5

1. Cytoplasm
2. Nucleus

Question 6

Dentrites receive _____ and _____ and send them through the _____ and the _____.

Answer 6

1. Messages
2. Impulses
3. Cell body
4. Axon

Question 7

The axon is a _____ _____ _____ that sends _____ away from the cell body.

Answer 7

1. Single
2. Long
3. Fibre
4. Messages

Question 8

The axon is covered by a _____ sheath that is made of _____ cells. This coating increases the speed of the nerve signals.

Answer 8

1. Myelin
2. Myelin

Question 9

Nerve impulses travel from one neuron to another across _____, which are spaces in between nerve cells.

Answer 9

1. Synapses

Question 10

The “jumping across” the synapses is help by chemicals called _____.

Answer 10

1. Neurotransmitters

Question 11

Synapses are where _____ affect the nervous system.

Answer 11

1. Drugs

Question 12

Neurons can be classified into three types:

Answer 12

1. Sensory
2. Motor
3. Inter

Question 13

Sensory neurons send information from _____ receptors _____ the central nervous system.

Answer 13

1. Sensory
2. Toward

Question 14

Motor neurons send information ______ from the central nervous system to _____ or _____.

Answer 14

1. Away
2. Muscles
3. Glands

Question 15

Interneurons send information _____ sensory neurons and motor neurons. Most are located in the _____ _____ _____.

Answer 15

1. Between
2. Centeral, nervous, system