BIO310H5 Lecture Notes - Lecture 15: Peristalsis, Muscular Layer, Hindgut
Document Summary
Anything we eat has to be broken down into the simplest forms of energy so the cells can use it. Batch reactor one opening: hydra, have one opening for ingestion of food and removal of waste. Plug flow: humans, can be continuous if you regularly eat. The stomach location and shape differs depending on the animal. 2 opening (ingestion and excretion) the actual digestion starts at the stomach stomach connected to the head gut by a tube to carry food from the head gut is able to expand depending on the presence of food. Walls of the stomach have many pits connected to the gastric gland (secrete to lumen) Goblet : secretes mucus which protects the wall to help stomach to not digest itself. Parietal : secret concentrated hcl denaturizes the protein and opens its complex 3 dimensional shapes when relaxed this protein can be chopped.
