Digestive System
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Purpose of the digestive system
Breaks down food and absorbs it into the blood stream
Allementary canal
The route that good travels through the digestive system
Tube that food travels through
Alimentary canal
Peristalsis
Muscle contract and move the food through the Allementary canal
7 essential nutrients in your diet
Carbohydrates Proteins Fats Minerals Vitamins Fibres Water
Enzymes
Proteins that speed up chemical reactions
Amyles
Breaks down starch and sugars into carbs
Protease
Breaks down proteins and amino acids
Lipase
Breaks down fats into fatty acids
Actions of bile
Neutralizes stomach acid Emulsified fats to break down into smaller peices
Factors that affect enzyme activity
Enzyme Concentration Substrate concentrate Temperature Competition from inhabiters
Denatured
Something disrupts the active site deforming it
Villi
Absorbs nutrients into the blood
Each networks has it’s own network of
Capillaries
3 adaptations of villi
One cell thick Large surface area Has it’s own network of capillaries
Gluten is a
Protein
Celiac Disease
Auto immune response due to consumption of wheat, barley and rye Peptide in these crops cause the immune system to attack and degrade Villi
Symptoms of celiac disease
Weight loss Bone loss In ability to absorb minerals and nutrients
Found in the salivary glands, pancreas, and small intestines
Amylase
Speed up breaking down starch into sugar
Amylase
Breaks down into carbs
Amyles
Breaks down proteins
Protease
Made in stomach, pancreas and small intestine
Protease
Hydrochloric acids provide the perfect conditions for ___ enzymes
Protease