Flashcards in Digestive system Deck (26):
What is digestion?
breaking down larger food molecules into smaller ones
What is absorption?
passage of these molecules into blood and lymph
Layers of the alimentary canal?
1. mucosa 2. submucosa 3. muscularis 4. serosa
where is MALT located?
lamina propria of the mucosa layer
What is mastication?
moistens food, is a solvent and a buffer. Is 99.5% water and amylase
What is deglutition?
What are the ranges for the stomach?
50 ml to 4 L
H coming together with Cl. activate pepsinogen to pepsin, which digests proteins.
Gastric absorption is impermeable except to?
water, ions, aspirin, alcohol
What does the liver emulsify?
What is the pH of Bile?
what are micelles?
fatty acids+bile salts+cholesterol in a ball
Small intestine is divided how?
1. duodenum 2. jejunum 3. Ilieum
increase surface area in the small intestine
mucosa associated lymphoid tissue
lymphoid tissue in the lamina propria
what percentage of absorption occurs in the small intestine?
Carbs are digested how?
facilitated diffusion or active transport
lipids are digested how?
vitamins are digested how?
proteins are digested how?