1. Next Review Session is Wed 5/31 @ 3:15 PM
Date: May 30th, period 5
Aim # 82: What are the structures and functions of the human digestive system?
HW:
Test Friday 6/2 (Regents MC!)
RRB pages 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 3:15 PM

2. Next Review Session is Thursday 6/1: @ 3:15 PM
Date: May 30th, period 1
Aim # 82: What are the structures and functions of the human digestive system?
HW:
Test Friday 6/2 (Regents MC!)
RRB pages 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

3. Digestive System

4. 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

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

6. 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

7. 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

8. 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

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

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

11. 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? ______________

12. Brain Pop: Digestive System ~2.5 minutes

13. Brain Pop: Appendix ~3 minutes