NFS284H1 Chapter Notes - Chapter 3: Microbiological Culture, Metabolic Pathway, Circulatory System
Document Summary
There are four major types of tissue: muscle, nerve, epithelial, connective. The stomach contains many types of tissues: nervous tissue and connective tissue which signal the brain when it is empty or full, muscle tissue which churn ingested food, specialized epithelial cells which produce acids and enzymes. The structure of the digestive system: gastrointestinal tract. Mouth chews food and mixes it with saliva. Pharynx swallows chewed food mixed with saliva. Esophagus moves food to the stomach. Stomach churns and mixes food; secretes acid and a protein-digesting enzyme. Small intestine completes digestion; absorbs nutrients into blood or lymph. Large intestine absorbs water and some vitamins and minerals; home to intestinal bacterial; Anus opens to allow waste to leave the body: accessory organs. Salivary glands produce saliva, which contains a starch-digesting enzyme. Pancreas releases bicarbonate to neutralize intestinal contents; produces enzymes that. Liver makes bile, which aids in digestion and absorption of fat digest carbohydrate, protein, and fat.
