This Week: Digestion and Nutrition

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This Week Digestion and Nutrition Next
WeekPlants are Cool
5/2 Exam 3 4/27 bonus 34/30 homework 4(12 pts
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The Digestive System
CB 41.15
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(No Transcript)
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light
Photosynthesis
CO2 H2O
C6H1206 O2
sugar
Cellular Respiration
CO2 H2O
C6H1206 O2
sugar
energy
ADP
ATP
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Cells store energy in ATP
Energy released
Energy used
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Using ATP
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Complex molecules are broken down and then used
to build needed molecules and to produce energy
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Animals take in complex molecules from the
environment for energy production
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Animal digestion occurs outside of our cells.
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animal and fungal digestion occurs outside of
our cells.
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Physical digestion liquefying of food Chemical
digestion breaking large molecules into small
molecules
CB 41.21
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Chewing and adding saliva begins the process of
liquification
Amylase in mouth
Amylase begins the chemical digestion of carbs
CB 41.16
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The primary function of the stomach is food
storage
CB 41.15
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In the stomach liquification continues.
Pepsin in stomach
Pepsin begins the chemical digestion of proteins.
CB 41.17
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Pepsin in stomach
enzyme activity
basic
acid
pH
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The Digestive System
CB 41.15
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Most chemical digestion occurs in the first part
of the small intestine
CB 41.17
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The small intestine has a large surface area to
aid in absorbption of nutrients
CB 41.23
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Absorption in the Small Intestine
CB 41.23
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The Digestive System
CB 41.15
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In liver, nutrient levels in blood are regulated
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Fats and lipids move through the lymphatic
system, which returns fluid to blood directly
before heart
small intestine
Lymph vessel
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CB 41.21
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Different mouth and teeth structures can tell
about an animals diet
CB 41.26
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Different mouth and teeth structures can tell
about an animals diet
CB 41.26
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Grizzly bear teeth
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Carnivores have a short digestive system
Herbivores have a long digestive system
CB 41.27
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Humans
Bears
Both humans and grizzly bears are omnivores. Our
digestive systems can tell us about our ancestors.
CB 41.27
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(No Transcript)
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This Week Digestion and Nutrition Next
WeekPlants are Cool
5/2 Exam 3 4/27 bonus 34/30 homework 4(12 pts
max)