Human Nutrition Flashcards
(35 cards)
Define digestion
Is the breaking down of food into small particles that can be taken into our bloodstream
What is mechanical digestion
The physical breakdown of food
What is chemical digestion
The breaking down of food using enzymes or juices
What is peristalsis
Muscular contraction that physically pushes food along the alimentary canal
What does amylase break down into what
Starch into maltose
What does lipase break down into what
Lipids into fatty acids and glycerol
What does pepsin break down into what
Proteins into peptides
Where can amylase be made
Salivary glands or pancreas
If amylase is produced in the salivary gland where is it active in
Mouth
If amylase is produced in the pancreas where is it active in
Duodenum
What is the optimum ph for amylase
7-8
What enzyme does the pancreas make
Lipase
Where is lipase active in
Duodenum
What does the stomach lining make
Pepsin
Where is pepsin active in and what is its optimum ph
Stomach and 2
Where does ingestion take place
Mouth
Where does digestion start
Mouth
Where does digestion end
Duodenum
What are incisors used for
Cutting and slicing
What are canines used for
Gripping and tearing
What are pre molars used for
Crushing and grinding
What is the teeth formula
2(i2/2c1/1p2/2m3/3)=32
What is the function of the epiglottis
Prevents food going down the wrong pipe
What acid acts in the stomach
Hypochloric acid
