Chapter 2.3a Control and Communication: Nervous System

Question 1

The parts of the nervous system are the

Answer 1

brain, spinal cord, the nerves and the sense organs

Question 2

The nervous system is made up of cells called

Answer 2

neurons

Question 3

There are three basic types of neuro:

Answer 3

Sensory, relay and motor

Question 4

The Central Nervous System (CNS) is made up of the

Answer 4

brain and the spinal cord

Question 5

The brain is made up of the

Answer 5

cerebrum, cerebellum and medulla

Question 6

The cerebrum is responsible for

Answer 6

conscious thoughts, reasoning, memory and emotions

Question 7

The cerebellum controls

Answer 7

balance and co-ordination

Question 8

The medulla controls involuntary functions such as

Answer 8

breathing, heart rate and peristalsis

Question 9

The CNS processes information from the

Answer 9

Sense organs and coordinates responses

Question 10

Sense organs contain receptor cells which generate

Answer 10

electrical impulses in response to stimuli

Question 11

Electrical impulses pass from

Answer 11

sensory neurons to relay neurons within the CNS

Question 12

Relay neurons within the CNS pass electrical impulses to

Answer 12

motor neurons

Question 13

Motor neurons pass electrical impulses to

Answer 13

effectors which bring about a response

Question 14

Reflex actions are very rapid since they involve only

Answer 14

a few neurons and do no require complex processing of information by the brain

Question 15

Reflex actions help

Answer 15

protect the body from harm

Question 16

The group of neurons involved with the structure and function of a reflex action is called a

Answer 16

reflex arc

Question 17

A synapse is a

Answer 17

narrow gap between the neurons

Question 18

Chemicals are released into the synapse from the neuron leading to it. These chemicals allow an

Answer 18

electrical impulse to be generated in the next neuron after the synapse.