The heart is the driving force behind the avian circulatory system, and the vessels of the vascular system are the highways for oxygen, energy, and waste transport. Behind the feathers, a complex and ...
Birds are highly active creatures, capable of explosive speed and incredible stamina. These activities require an advanced respiratory system to oxygenate their blood and an efficient circulatory ...
Organ systems work together to keep the body in good health. For example, the circulatory and digestive systems work jointly to deliver nutrients throughout the body. Except for the reproductive ...