Zusammenfassung der Ressource
Heart and Circulation
- Open
- Blood contained in the body cavity
- Haemocil
- mainly in insects
- Closed
- Blood transported in vessels
- Arteries, veins, capillaries
- Mainly in mammals
- Single
- Blood passes through the heart once on each circuit
- Eg: fish
- Heart - Gills - Body - Heart
- Double
- blood passes through the body twice one each circuit
- Mammals
- Body - Heart - Lungs - Heart - Body