GENERAL HISTOLOGY

Detailed explanation-1: -the alimentary canal (also called the digestive tract). This long tube of organs makes a pathway for food to travel through the body.

Detailed explanation-2: -In a process called active transport, specialized intestinal cells of the villi allow the passage of B-12, iron and calcium into the bloodstream.

Detailed explanation-3: -The inside of the small intestine is lined with villi that absorb nutrients from the liquid mixture called chyme produced in the stomach from the food we eat.

Detailed explanation-4: -A long tube-like organ that connects the stomach and the large intestine. It is about 20 feet long and folds many times to fit inside the abdomen. The small intestine has three parts: the duodenum, jejunum, and ileum.

Detailed explanation-5: -Colon (Large Intestine): A 5-to 7-foot-long muscular tube that connects the small intestine to the rectum and is responsible for processing waste so that defecation is easy and convenient.