It is the systematic circulation system or if you want a specific organ the aorta.
It is the systematic circulation system or if you want a specific organ the aorta.
The aorta is an artery, and arteries are types of blood vessels. So the aorta would be considered part of the cardiovascular system (heart). http://www.cancerindex.org/medterm/medtm8.htm
The genitourinary system.
The digestive system contains the liver.
Circulatory System
Digestive system.
the digestive system
skeletal system
Circulatory System.
The olfactory system.
The endocrine system.