B5: Nervous System Flashcards Preview

GCSE (TRILOGY) BIOLOGY (PAPER 2) > B5: Nervous System > Flashcards

Flashcards in B5: Nervous System Deck (11):
1

How is information passed around the body?

Through electrical impulses.

2

What are the parts of the central nervous system?

The brain and the spinal cord.

3

What does the CNS do?

Coordinates response to stimuli.

4

What does the nervous system allow us to do?

Respond to stimuli/our environment.

5

What detects stimulus?

Receptors.

6

What are effectors?

All your muscles and glands.

7

What is an important property of nerves?

They’re fast.

8

What is a synapse?

The junction between two nerves.

9

What do glands do?

Respond to nervous impulses and secrets hormones.

10

Explain how your body responds to stimulus.

1) stimulus - change in environment
2) receptor - detects stimuli
3) sensory neurones - carry info as electrical impulses from receptors to the CNS
4) CNS - coordinates response to stimuli
5) motor neurones - carry electrical impulses from the CNS to effectors
6) effector - respond to nervous impulses (muscles & glands)

11

Give an example of when receptors form part of larger, complex organs.

The retina of the eye is covered in light receptor cells.