HUMAN NUTRITION

Detailed explanation-1: -The small intestine, which is 670 to 760 cm (22 to 25 feet) in length and 3 to 4 cm (about 2 inches) in diameter, is the longest part of the digestive tract.

Detailed explanation-2: -The small intestine is so long because it needs a maximum amount of surface area to increase digestion and nutrient absorption. The small intestine is where your body breaks down food and takes up all the possible nutrients from it before discarding the rest as waste.

Detailed explanation-3: -The large intestine is about six feet long-much shorter than the small intestine, which is 22 feet. It’s called the large intestine because it’s wider-about three inches, while the small intestine is only one inch in diameter.

Detailed explanation-4: -In humans, the small intestine is about 6 meters or 20 feet long and the large intestine is about 1.5 meters or 5 feet long. The gastrointestinal tracts of the Chimpanzee, Orangutan, and adult human and a human fetus were studied and compared by Stevens and Hume in 1995.