Reflexes Flashcards
1
Q
how is information carried around the body
A
as nerve impulses(electrical signals) in nerve cells called neurones
2
Q
what is the central nervous system made up of
A
the brain and spinal cord
3
Q
what is the peripheral nervous system made up of
A
nerves to and from the brain and spinal cord
4
Q
examples of reflexes
A
> knee jerk
>taking a hand away from a hot plate
5
Q
what do sensory neurones do
A
carry impulses away from sensory receptors
6
Q
what do motor neurones do
A
carry impulses to an effector (muscle or gland)
7
Q
why do we have reflexes
A
to react to things automatically e.g to avoid pain and to survive
