HSCI 1105 Lecture Notes - Lecture 5: Salivary Gland, Large Intestine, Rectum

• School: Northeastern University
• Department: Health Science
• Course: HSCI 1105
• Professor: Judith Richman

Document Summary

Karina da rosa: nutrition, digestion and absorption i. Biochemically: food provides energy to build body structure and synthesize regulatory molecules ii. Atoms and molecules: atoms of different characteristics are more or less abundant, oxygen, hydrogen, carbon, and nitrogen iii. Mouth => esophagus => stomach => small intestine => large intestine => rectum => anus: mouth i. ii. Swallowing is voluntary but involuntary autonomic control takes over once the food moves through: esophagus i. Long tube that connects your mouth to your stomach - no digestion occurs here: stomach i. ii. Storage that holds about 4 cups of food. Very acidic, in order to denature proteins and kill any toxic material: small intestine i. ii. Breaks down food entering from the stomach very slowly - about one teaspoon a minute: large intestines i. No digestion, but a lot of bacterial action: rectum i. Stool remains and stimulates elimination: anus i.