All about the heart and blood vessels!
The heart
- Created by: smudgeacorn
- Created on: 04-04-14 17:00
Other questions in this quiz
2. What do the cords in the heart do?
- keep the ventricles in shape
- attach the semilunar valves to the ventricles to stop them being forced up into the aorta
- attach the atrioventricular valves to the ventricles to stop them being forced up into the atria when the ventricles contract
- keep the atria in shape
3. If there is higher pressure behind a valve, is it forced open or shut?
- open
- shut
4. Do arteries have thick or thin muscle layer?
- Thick
- Thin
5. Why are capillary walls (endothelium) only one cell thick?
- To speed up diffusion
- To make them smaller
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