a circulatory system is the system that controls the circulation of blood through the body.
The hepatic portal vein, which is part of the circulatory system, carries blood which has absorbed nutrients from the intestines to the liver.
they are touching!
ALL bodily systems are connected in some way to the circulatory system. The circulatory system is often used to simply transport a bunch of "stuff" throughout the body. Most notably the Endocrine...
Respiratory system
Frog's Leap Is a Marvel of Muscle Mechanics
The Human Circulatory System Explained
Consequences of the Gold Rush on the California's Water System
Impact of the Water System on the Ecosystem in California