10.1 Co-ordination

HideShow resource information
  • Created by: Molly
  • Created on: 10-03-14 10:31
What are the two main forms of co-ordination in mammals?
The nervous system and the hormonal system.
1 of 10
Describe the nervous system?
Uses nerve cells to pass electrical impulses across their length. They stimulate their target cells by secreting NEUROTRANSMITTERS. The responses produced are short-lived and restricted to a localised region of the body.
2 of 10
Describe the hormonal system?
produces hormones that are transported in blood plasma to their target cells, which they then stimulate. This results in a slower, less specific form of communication between parts of an organism. The responses are long-lasting and widespread.
3 of 10
What are chemical medatiors?
Chemicals that are released from certain mammalian cells and have an effect on cells in their vicinity.
4 of 10
Which cells typically release chemical mediators?
Infected or injured cells
5 of 10
What do chemical mediators cause?
They cause the arteries/ arterioles to dilate, which leads to a rise in temperature and swelling of the affected area.
6 of 10
Which chemical mediator is released typically in response to an allergen?
Histamine.
7 of 10
Which chemical mediator is released typically in rsponse to an injury?
Prostaglandis
8 of 10
Where is histamine stored?
In white blood cells
9 of 10
Where is prostaglandis stored?
In cell membranes.
10 of 10

Other cards in this set

Card 2

Front

Describe the nervous system?

Back

Uses nerve cells to pass electrical impulses across their length. They stimulate their target cells by secreting NEUROTRANSMITTERS. The responses produced are short-lived and restricted to a localised region of the body.

Card 3

Front

Describe the hormonal system?

Back

Preview of the front of card 3

Card 4

Front

What are chemical medatiors?

Back

Preview of the front of card 4

Card 5

Front

Which cells typically release chemical mediators?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Cellular processes resources »