6

Question 1

What is a reflex?

Answer 1

A fixed response to a stimulus

Question 2

Receptors within sense organs: 5

Answer 2

Tongue
Eye
Skin
Nose
Ear

Question 3

Sensory neurons

Answer 3

Take messages to the central nervous system

Question 4

Relay/interneurons

Answer 4

Connect sensory and motor neurons together

Question 5

Motor neuron

Answer 5

Take messages away from the CNS to the effectors

Question 6

what is a neuron?

Answer 6

they are specialised cells that conduct electrical impulses

Question 7

Dendrite

Answer 7

Receives communication from other nerve cells

Question 8

Cell body/soma

Answer 8

Surrounds the nucleus

Question 9

Nucleus

Answer 9

Contains the genetic information that controls the neuron

Question 10

Myelin Sheath

Answer 10

Outer coating of the axon, protects + maintains health of the axon. Acts like an electrical insulator

Question 11

Node of Ranvier

Answer 11

Allow impulses to jump by a process called saltatory conduction, impulses jump through the gaps

Question 12

Schwann Cell

Answer 12

Helps to form the myelin sheath and speeds up transmissions of nerve impulses

Question 13

Axon terminals

Answer 13

Connects the neuron to target cells

Question 14

Nares

Answer 14

The avian equivalent of nostrils

Question 15

Larynx

Answer 15

Not used for vocalisation but the syrinx is used instead

Question 16

Air capillaries

Answer 16

Instead of alveoli for gas exchange

Question 17

Air sacs

Answer 17

7 or 9 which extend into some bones