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Flashcards in nervous system and transmitting Deck (16):
1

what forms the central nervous system

brain n spinal cord

2

how do the nerves communicate

through elecrical signals called impulses

3

what is a stimulus

anything your body is sensitive to

4

where are recepror cells found

sensory organs, e.g. eyes, skin

5

what detect stimuli

receptor cells

6

what is the travelling of impulses called

neurotransmission

7

what is the myelin sheath

fatty layers surrounding the dendrons and axons

8

how do impulses travel

1- an impulse passes into a tiny branch called the dendron
2- from there they are transmitted across the dendron and axon
3- then a series of axon terminals allow impulses to be transmitted to other neurones

9

what carries out a response

the effectirs

10

example of effectors

muscels

11

what do motor nuerons do

carry impulses to effectors

12

what links motor neurons and sensory neurons

relay neurons

13

where do different neurons meet

synapse

14

what happens when an impulse meets an axon terminal

a neurotransmitter substance is released which is then detected by the next neurone and a new impulse is created

15

what are reflexes

automatic actions done without thinking in order to protect the body

16

what is a reflex arc

a neurone pathway used for reflexes that avoids parts of the brain involved in processing information