Next Review Session is Wed 5/31 @ 3:15 PM Date: May 30th, 2017- period 5 Aim # 82: What are the structures and functions of the human digestive system? HW: Test Friday 6/2 (Regents MC!) RRB pages 31-44 due Friday Castle Learning (QUIZ #5) due next MONDAY Do Now: Define the life function nutrition. What are the two types of nutrition? Describe each. Next Review Session is Wed 5/31 @ 3:15 PM

Next Review Session is Thursday 6/1: @ 3:15 PM Date: May 30th, 2017- period 1 Aim # 82: What are the structures and functions of the human digestive system? HW: Test Friday 6/2 (Regents MC!) RRB pages 31-44 due Friday Castle Learning (QUIZ #5) due next MONDAY Do Now: Define the life function nutrition. What are the two types of nutrition? Describe each. Next Review Session is Thursday 6/1: @ 3:15 PM

Digestive System

Organ Function a. mouth Mechanical digestion (chewing) Chemical digestion of carbs b. esophagus No digestion Peristalsis moves food down c. stomach Protein digestion d. pancreas Makes enzymes that are released into small intestine to break down carbs, lipids and proteins e. small intestine Digestion of carbs, lipids and proteins Absorption of digested material by villi f. large intestine Reabsorption of water by villi g. liver Makes bile to emulsify fat Not labeled: Epiglottis Prevents food from going down the wrong pipe

Peristalsis: rhythmic muscular contractions used to move food through our digestive tract

Villi: Villi: finger-like projections increase surface area for greater absorption of fatty acids, glycerol, monosaccharide, and amino acids surrounded by blood vessels to absorb and carry away nutrients lacteal: part of lymphatic system that absorbs fats

Accessory organs: Accessory organs Function f. liver Makes bile to emulsify fats e. gall bladder Stores bile c. pancreas Makes digestive enzymes to break down all three macronutrients

Subunits (building blocks) Enzymes are used to break down macronutrients into micronutrients that are small enough to be transported to cells: Macronutrient Subunits (building blocks) Carbohydrates Monosaccharides Proteins Amino acids Lipids 3 fatty acids and a glycerol

Bile: made in the liver and stored in the gall bladder; used to emulsify fats (mechanically break them down)

Vitamins and minerals: small and don’t have to be digested first Vitamins: act as coenzymes

What enzyme works best in an acidic environment? __________ What organ would this work best in? _______________ What enzyme works best in a basic environment? __________ What organ would this work best in? ______________

Brain Pop: Digestive System ~2.5 minutes

Brain Pop: Appendix ~3 minutes