Reflex arc

Question 1

Simple reflex

Answer 1

Allow rapid, automatic response to stimuli, the purpose of which is to protect an organism from harm

Question 2

Reflex arcs

Answer 2

Automatic and fast nerve pathways taken by reflexex. Faster than any type of nervous response

Question 3

Reflex arc when a stimuli is detected

Answer 3

Stimulus > receptors > coordinators/CNS > effectors > response

Question 4

Three types of neurones in reflex arcs

Answer 4

Sensory neurone
Relay neurone
Motor neurone

Question 5

Sensory neurone

Answer 5

Carry impulses from receptor to the central nervous system (CNS)

Question 6

Relay neurone

Answer 6

Connect sensory and motor neurones, Found within CNS

Question 7

Motor neurone

Answer 7

Carry impulses from CNS to effectors (Effectors - Muscles or glands)

Question 8

Stimulus

Answer 8

A detectable change in the internal or external environment of an organism that produces a response.

Question 9

Receptor

Answer 9

A cell or protein that detects a stimulus and initiates an electrical impulse in response.