Question

1. __________ is a molecule that digests specific nutrients at a specific pH.

2. __________ is the mechanical action that moves food through the digestive tract.

3. __________ is the mechanical action of the small intestines that spreads out food apart.

4. __________ is the mechanical action of the stomach that breaks food apart.

5. Which macronutrient is chemically digested while in the mouth?

6. __________ is the region of the stomach where food is stored.

7. __________ is the gastric enzyme that digests proteins.

8. __________ is the gastric enzyme that digests lipids.

9. __________ is the enzyme that digests carbohydrates.

10. What is an intrinsic factor and where is it produced?

11. Carbohydrates are absorbed as __________ .

12. Lipids are absorbed as __________ and _________ .

13. Proteins are absorbed as __________ .

14. Where are most nutrients absorbed?

15. Name one action that occurs in the large intestines.

16. The presence of ______ in the blood indicates a low risk for heart disease.

17. If the gastroesophageal sphincter fails to close, __________ will occur.

18. Pepsinogen + ______ = pepsin

19. Name 2 reasons that the stomach wall is not digested by pepsin.

20. The gall bladder/liver secretes _____ that aids in the digestion and absorption of lipids.

Answer 1

1. Microorganisms present in stomach helps in digesting some of the nutrients to maintain homeostasis.

2. Peristalsis is the movement where the help of the smooth muscle contraction they pushes the food enters into the stomach from esophagous and then relaxes. During this they have a wave motion.

3. The small intestine action other than spread out food are absorbing nutrients form the food.by diffusion.

4. It helps in production of harmones (gastrointestinal) and also acts as a nutrient sensors.

5. Starch is the macronutrient which chemically breakdown into glucose by amylase enzyme present in mouth.

7.Pepsin is a gastric digestive enzyme which digests proteins.

8. Lipases are the enzymes which is mainly produced by the cells in the stomach which helps in digesting the lipids.

13.Proteins are absorbed by active transport mechanisms in small intestine and breakdown into amino acids.

14. Most nutrients are absorbed in small intestine.

15. The large intestine main action is to absorb water in larger quantities . The action is when food enters into the body the minerals and the waters form the liquids are absorbed before digestion.these absorption is mailny done by process osmosis.

17. GERD disease ( gastricesophagealspincture reflux disease) is caused due to failure of closure of spincture because the food and the juices goes back to esophagous and cause pain in chest.

18. Pepsinogen + HCL = pespsin

Where pepsinogen is activated by the HCL which is a juice secreted by stomach converts into pepsin.

20. Bile is juice which is secreted by the liver and stored in gall bladder to break down the lipids.