2) GCSE Biology B7 revison (B7.2 - peak performance and circulation)

?
  • Created by: Ross
  • Created on: 03-06-13 12:37
What is meant by a double circulatory system?
Two circuits joined together. The first one pumps deoxygenated blood to the lungs to take in oxygen. The second pumps oxygenated blood around the body.
1 of 12
What does blood carry to and from the muscles?
Glucose molecules and oxygen TO the muscles. Waste products (e.g. carbon dioxide) AWAY FROM the muslces.
2 of 12
What makes up blood?
Red blood cells, White blood cells, Platelets, Plasma.
3 of 12
What are the properties of a red blood cell and how do they help?
Large surface area to transport lots of oxygen.
4 of 12
What does a white blood cell do?
Fights infections.
5 of 12
What do platelets do?
Cause the blood to clot at the injury site.
6 of 12
What is plasma for?
Transporting nutrients(glucose and amino acids), antibodies, hormones and waste (carbon dioxide and urea).
7 of 12
How are red blood cells adapted to their function?
Packed with haemoglobin (to bind oxygen) - no nucleus (more space for haemoglobin) - bioconcave shape (increased surface area for oxygen exchange)
8 of 12
What are the function of valves in the heart and veins?
To stop the back flow of blood to increase the efficiency of blood flow.
9 of 12
Where is tissue fluid formed?
Capillary beds.
10 of 12
What is tissue fluid for?
To assist the exchange of chemicals by diffusion between capillaries and tissues.
11 of 12
What diffuses through the tissue fluid?
Oxygen, carbon dioxide, glucose and urea.
12 of 12

Other cards in this set

Card 2

Front

What does blood carry to and from the muscles?

Back

Glucose molecules and oxygen TO the muscles. Waste products (e.g. carbon dioxide) AWAY FROM the muslces.

Card 3

Front

What makes up blood?

Back

Preview of the front of card 3

Card 4

Front

What are the properties of a red blood cell and how do they help?

Back

Preview of the front of card 4

Card 5

Front

What does a white blood cell do?

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 Circulation resources »