Th Heart and the Blood Vessels

HideShow resource information
  • Created by: patricia
  • Created on: 22-11-13 16:10
What does the right side of the heart do?
It pumps deoygenated blood to the lungs
1 of 19
What does the left side of the heart do?
It pumps oxygenated blood to the whole body
2 of 19
What does the left atrium have over the right ventricle?Why is this so?
Left ventricle of the heart is thicker, more muscular than the right ventricle., because it needs to contract powerfully to pump the blood all the way around the body. The right sde only needs to get blood to the lungs, which are nearby
3 of 19
What is different about the ventricle from the Atria?Why is this so?
The Ventricles have thicker walls than the Atria because they have to push blood out of the heart whereas the Atria just needs to push blood a short distance to the Ventricles
4 of 19
What is the purpose of the Atrioventricular valve?
Links Atria to the Ventricles to stop blood flowing back into the Atria when the Ventricles contract
5 of 19
What is the function of the of the Semi lunar valve?
Links the Ventricle to the Pulmonary Artery and Aorta, and stop blood flowing back to the heart after the Ventricles contract
6 of 19
What is the purpose of Valve Tendons?
Attach the Atrioventricular valves to the ventricle to stop them being forced up into the Atria after Ventricle contraction
7 of 19
Describe how Atrioventricular valves and Semi lunar valves stop blood flowing the wrong way?
The valves only open one way- whether they're open or closed it depends on the Relative pressure of the heart chambers. It there is a higher pressure behind a valve, it's forced open. When there is higher pressure in front of valve, it is forced shut
8 of 19
What is the Arteries? What is there function?
They carry blood away from the heart to the rest of the body/
9 of 19
Describe the structure of the Arteries
They're thicked walled, muscular and have elastic tissue in the walls to cope with pressure caused by the heartbeat
10 of 19
Describe the Endothelium in an Artery and what it's function?
The inner lining is folded allowing the artery to expand - this also helps it to cope with pressure
11 of 19
What does Veins do?
They carry blood back to the heart
12 of 19
What does Veins contain?
They contain valves to stop the blood flowing backwards
13 of 19
What helps the blood flow through the veins?
It is helped by contractions of the body muscles surrounding them
14 of 19
What is the difference between the Artery and the vein?
Veins are wider than equivalent arteries, with very little elastic and muscle tissue
15 of 19
What is difference is size of the capillary compared to the Arteries and Veins?
They are the smallest of the blood vessels.
16 of 19
What happens in the Capilleries?
They are where metabollic reactions coccur - substances are exchange between the cells and the capilleries
17 of 19
What are capillary beds? What is there function?
They're a network of capilleries in tissue to increase the surface area for exchange.
18 of 19
What is the advantage of capillary walls?
They're only one cell thick which speeds up diffusion of substances
19 of 19

Other cards in this set

Card 2

Front

What does the left side of the heart do?

Back

It pumps oxygenated blood to the whole body

Card 3

Front

What does the left atrium have over the right ventricle?Why is this so?

Back

Preview of the front of card 3

Card 4

Front

What is different about the ventricle from the Atria?Why is this so?

Back

Preview of the front of card 4

Card 5

Front

What is the purpose of the Atrioventricular valve?

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 Human, animal and plant physiology resources »