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.
smooth muscles
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.
to move nutrients to the individual cells of the body
The digestive system uses muscles to digest food. For example, stomach muscles help to break down food.
The muscular system is the mechanical force behind the digestive system. Beginning when you take a bite, your muscular system aids your digestive system. Chewing and swallowing are done by the muscular system; muscles surrounding your stomach churn up food to aid digestion; muscles transport digested food through your intestines and eventually out of your body. (The muscles for chewing and swallowing are voluntary muscles; the rest are involuntary.)
The digestive system comprises of organs that work together in order to ensure that food is properly processed through the body. Examples of such organs include the stomach and the intestines.
The ring shaped muscle in the digestive system is the lower esophageal sphincter (LES).
The Esophagus, tongue, stomach, small and large intestines, and the rectum are the major muscles in the digestive system
muscles
it is digested to your muscles.
hepatic portal system
The muscles of the digestive system are smooth muscles.