Date: May 30th, 2017- period 5
Aim # 82: What are the structures and functions
of the human digestive system?
Do Now:
1) Define the life function nutrition.
2) What are the two types of nutrition? Describe each.
HW:
1)Test Friday 6/2 (Regents MC!)
2)RRB pages 31-44 due Friday
3)Castle Learning (QUIZ #5) due next
MONDAY
Next Review Session is Wed 5/31 @ 3:15 PM
Date: May 30th, 2017- period 1
Aim # 82: What are the structures and functions
of the human digestive system?
Do Now:
1) Define the life function nutrition.
2) What are the two types of nutrition? Describe each.
HW:
1)Test Friday 6/2 (Regents MC!)
2)RRB pages 31-44 due Friday
3)Castle Learning (QUIZ #5) due next
MONDAY
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
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
• http://www.brainpop.com/health/bodysystems/dig
estivesystem/
Brain Pop: Appendix
~3 minutes
• http://www.brainpop.com/health/bodysystems/ap
pendix/