Digestive System
Subject:
Biology [1]
Tags:
anatomy [2]
Digestive system [3]
Biology [4]
Medicine [5]
Digestion [6]
Digestive enzyme [7]
Small intestine [9]
Bile [10]
Stomach [11]
Gastro- [12]
Pancreas [13]
health [14]
DIGESTIVE SYSTEM - Transfers nutrients, salts, H2O and vitamins in food from external to internal environment Anatomy: Digestive tract (gastrointestinal (GI) tract) Mouth -> Pharynx -> Esophagus -> Stomach -> Small intestine -> Large intestine -> Anus DIGESTIVE SYSTEM Digestive System: Mouth: - teeth = mastication (incisors, canines, molars) -3 pairs salivary glands secrete saliva: 1) moistens and lubricates food 2) amylase DIGESTIVE SYSTEM Digestive System Organs Pharynx and Esophagus - transport food and water to stomach - swallowing reflex: epiglottis As food approaches stomach, sphincter relaxes so food can go into stomach Sphincter closes -> Prevents acid reflux DIGESTIVE SYSTEM