nervous system

Question 1

skin sense organ

Answer 1

sense = touch
stimulus = pressure, pain, hot/cold temp

Question 2

tongue sense organ

Answer 2

sense = taste
stimulus = chemicals in food and drink

Question 3

nose sense organ

Answer 3

sense = smell
stimulus = chemicals in the air

Question 4

eyes sense organ

Answer 4

sense = sight
stimulus = light

Question 5

ears sense organ

Answer 5

sense = hearing / balance
stimulus = sound / movement

Question 6

neurone type ?

Answer 6

sensory, motor, relay

Question 7

central nervous system consists of

Answer 7

brain and spinal cord only

Question 8

when receptors in a sense organ to detect a stimulus what happens ?

Answer 8

the send electrical impulses along sensory neurones to the CNS. CNS then sends electrical impulses to an effector along a motor neurone.

Question 9

Coordinated responses need ?

Answer 9

stimulus, receptor and an effector

Question 10

why can the nervous system bring very rapid responses?

Answer 10

because neurones transmit information using high speed electrical impulses

Question 11

connection between two neurones ?

Answer 11

synapse

Question 12

neurotransmitters

Answer 12

chemicals that are released and diffuse across the synapse to transfer a nerve signal and give a new electrical signal in next neurone