It is called the hepatic portal circulation. A portal system is a system of blood vessels that begin in capillaries and end in capillaries without passing through the heart. The hepatic portal system begins in the capillaries in the digestive tract wall and ends in the capillaries in the liver.
There are many capillaries in your lungs, digestive system and muscles because each of these locations require blood to be transfered to individual cells snd capillaries are the smallest vessels that can do this.In your lungs capillaries connect to the alveoli and enable gas exchange within the body.In your digestive system capillaries enables food to be passed through the walls of the intestines.In your muscles capillaries deliver a fresh supply of oxygen to each cell and remove any bi-products enabling you to move sufficiently.
hepatic portal system
Alveoli exchange Oxygen with blood in capillaries
No
The villi are part of the digestive system. They are found in the small intestine and their role is to increase the surface area for nutrient absorption.
No since it has a specific role in the digestive system
digestive system throw the waste and dirt from the body and nutrients enters the circulatory system through capillaries.
It passes through the wall of the digestive system, then into the blood.
Teeth belong to the digestive system. They are part of the oral cavity and play a role in breaking down food before it enters the digestive tract.
the nutrients absorbed in small intestine carried by the blood. the fats and few proteins escape through the capillaries and enters into the lymph which carry these to the lumphatic system.
The tongue is part of the digestive system, as it plays a crucial role in tasting and manipulating food, as well as assisting in the process of swallowing and speaking.