Anatomy of the Small Intestine The small intestine is long yet narrow. It is about 20 feet long and a little less than an inch in diameter. Even though it's so long, the organ is able to fit in ...

As a person eats, the small intestine digests and absorbs up to 90% of the nutrients that become fuel. What remains then passes to the colon.

The small and large intestines are a vital part of the human digestive system. The length of the small intestine is roughly 9–16 feet (ft), while the large intestine is shorter, measuring around ...

Women’s small intestines are longer than men’s, with this added length probably helping them to better absorb fat and other nutrients if needed for pregnancy and breastfeeding.

The small intestine is not small. And it’s not easy to examine. Sandwiched between the stomach and the large intestine, in an average adult it is 7 meters long and 2.5 centimeters thick.