Describe the roles of the small intestine and how the structures relate to its functions
what are the structures in the small intestine
what does the small intestine do to food
what organ is it related to
How are the structures in the small intestine adapted to carry out their functions effectively
what food can it digest
what enzymes does it contain
Numerous folds in the intestinal wall
the small intestine digests food into simple substances that are diffused into the one-cell thick villi and into the bloodstream to the liver before being transported to the rest of the body
the small intestine is related to the large intestine, the undigested food from the small intestine gets transported to the large intestine where water and mineral salts are absorbed before entering the rectum
this increases surface to volume ratio for a more efficient rate of diffusion of food substances
One-cell thick Villi
The blood capillaries network transports amino acids and glucose to the body.
The Lacteal capillaries transport fatty acids and glucose to the body
Maltose, sucrose, lactose, polypeptides and fats
In general, the small intestine consists of the duodenum, jejunum, and the ileum
Contains intestinal juice, pancreatic juice and bile are released into the small intestine when chyme enters the small intestine
Four adaptations: Numerous folds in the small intestine, One-cell thick Villi, Well supplied with blood capillaries, and there is a Presence of a steep concentration gradient
One -cell thick Villi is connected to blood capillaries that transport different food substances, the blood capillaries network transports amino acids and glucose, the Lacteal capillaries transport fats and glucose
Being well supplied with blood capillaries maintains a steep concentration gradient
Numerous folds in the small intestine results in an increased surface area to volume ratio for efficient diffusion of food substances
A steep concentration gradient would result in a high rate of diffusion and active transport for food substances in the small intestine