Venous return
- Created by: z_mills1
- Created on: 05-06-14 15:21
View mindmap
- Venous return
- mechanisms that assist the return of blood to the heart
- Skeletal pump
- the muscles surrounding the veins expand and contract, pressing on the veins, causing a pumping effect
- this pushes the blood back towards the heart because the valves in the veins prevent flow in the other direction
- the muscles surrounding the veins expand and contract, pressing on the veins, causing a pumping effect
- Respiratory pump
- muscles around the thoracic and abdominal region cause changes in pressure
- these changes allow veins to compress, causing blood to be forced to flow back to the heart
- muscles around the thoracic and abdominal region cause changes in pressure
- Valves
- prevent blood flowing back away from the heart in the veins
Comments
No comments have yet been made