Disgestive System Flashcards
(7 cards)
What is the main function of the digestive system?
To break down food into nutrients for absorption, eliminate waste, and process digestion, ingestion, absorption, and egestion.
What are the organs of the alimentary canal?
Mouth, esophagus, stomach, small intestine (duodenum, ileum), large intestine (colon), rectum, and anus.
What is the role of the liver in digestion?
The liver produces bile to aid fat digestion, stores glycogen, and detoxifies harmful substances.
What is the function of the pancreas in digestion?
The pancreas secretes digestive enzymes (lipase, amylase, protease) and bicarbonate to neutralize stomach acid.
How does peristalsis aid digestion?
Peristalsis involves rhythmic contractions of muscles in the alimentary canal that move food through the digestive system.
What is coeliac disease?
An autoimmune disorder where gluten damages the small intestine lining, impairing nutrient absorption.
What is the function of enzymes in digestion?
Enzymes break down macronutrients:
• Amylase: Carbohydrates into sugars.
• Protease: Proteins into amino acids.
• Lipase: Fats into fatty acids and glycerol.
