10.3 Reflex actions

Question 1

Three characteristic features of all reflex observed

Answer 1

• rapid
• automatic
• protective

Question 2

Name two neurons that act in all reflexes

Answer 2

• A sensory neurone and motor neurone

Question 3

Name the junction between two neurones

Answer 3

synapses

Question 4

What is a voluntary action

Answer 4

Response you have chosen to make, it it not automatic

Question 5

What is involuntary action/reflex

Answer 5

Automatic response to stimulus

Question 6

What do reflexs do

Answer 6

• avoid danger
• avoid harm
• take care of basic bodily functions

Question 7

The three types of neurone

Answer 7

• sensory
• motor
• relay

Question 8

Describe reflex arc

Answer 8

Stimulus -> receptor -> sensory neurone -> relay neurone -> motor neurone -> effector -> response

Question 9

What diffuses over the synapse

Answer 9

Electrical -> chemical

Question 10

what do relay neurones do

Answer 10

connect sensory neurones to motor neurones

Question 11

why are reflexes so fast

Answer 11

they do not involve the conscious part of the brain