GCSE - Neurons

Question 1

Homeostasis

Answer 1

the regulation of the internal
conditions of a cell or organism to maintain
optimum conditions for function
in response to internal and external
changes

Question 2

Receptor

Answer 2

cells that detect stimuli - changes
in the internal or external environment.

Question 3

Coordination centre

Answer 3

areas that receive and
process information from receptors

Question 4

Effector

Answer 4

areas (usually muscles or glands)
that bring about responses in the body

Question 5

Neurone

Answer 5

basic cells of the nervous system
that carry minute electrical impulses
around the body

Question 6

Nerve

Answer 6

bundle of hundreds or even thousands
of neurones

Question 7

Central nervous system

Answer 7

the part of
the nervous system where information is
processed. It is made up of the brain and
spinal cord

Question 8

Sensory neurone

Answer 8

speeds up natural
selection by selecting animals or plants
for breeding that have a required
characteristic

Question 9

Motor neurone

Answer 9

carry impulses from
the central nervous system to the
effector organs

Question 10

Reflex

Answer 10

reflexes rapid automatic responses of
the nervous system that do not involve
conscious thought

Question 11

Reflex arc

Answer 11

bring about a reflex action. They
involve the sense organ, sensory neurone,
relay neurone, and motor neurone