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32 Cards in this Set

  • Front
  • Back
What is the Function of the Digestive System?
Prepares food so that it can be used by cells
What is Ingestion?
To take in food
What is digestion?
To break down the food
What is absorption?
To absorb the food into the body(cells)
What is Igestion?
Eliminating undigested materials from body
What is Mechanical Digestion?
teeth to break apart food into smaller pieces
What is Chemical Digestion?
Changing the structure of the food using enzymes. Ex- starch–>sugar
What does saliva contain?
Water, mucin, and amylase
What does the Esophagus do?
Moves food down
What is Mechanical Digestion?
teeth to break apart food into smaller pieces
What are Peristalsis?
Muscular contractions that move the food down the Esophagus
What is the Epiglottis?
Flap of skin that covers the oping to the windpipe and Prevents food from going down the wrong way.
What does saliva contain?
Water, mucin, and amylase
What is the stomach and what does it do?
It’s a muscular pouch with mucus lining that uses acid (chemical) to break down food and it also churns the food (mechanical).
What is Gastric juice?
Water, hydrochloric acid, and pepsin
What is pepsin?
An enzyme that breaks down proteins into peptides
What is chyme?
End products (feces)
How long is the small intestine?
6 meters (18 feet)
Where do the first digestive juices come in from?
The liver and pancreas
What does the Pancreas Secrete?
Typsin, Amylase, and Lipase
What does typsin do?
Breaks down protein
What does Lipase do?
Breaks down fat (lipids)
What does liver produce and what does it do?
It produces bile which breaks down big fats to little fats (mechanically)
What is vili?
Projections in the lining of the small intestine that absorbs digested good
What is the Large intestine?
A.k.a. colon, muscular tube that moves undigested good.
Name nutrients.
Carbohydrates, fats, proteins, minerals, vitamins, and water
What are the 5 main food groups?
Fruits, Vegetables, Grains, Milk, and Meats
Describe Fats.
provide insolation, energy, build structures, and protection. Found in meats, nuts, dairy products, cooking oils. Unsaturated fats-“good fats” easier to break down. Saturated fats-“bad fats” harder to break down, cause high cholesterol.
Describe proteins.
Multi-purpose building materials. Good for enzymes, antibodies, muscles. Found in meats, dried beans, whole grains, eggs, dairy products. Last resort energy source.
Describe Minerals.
Nutrients that are inorganic substances(your body can’t make these by itself). Building materials and present in chemical reactions. Ex- calcium, iron, sodium.
Describe Vitamins
Organic nutrient. Helps growth and metabolism. Ex- A, B, C, D, K
Describe water.
Most abundant substance in the body. Used in chemical reactions, digestion, and allows nutrients to enter cells. It also regulates body temperature.