The Function Of The Oesophagus In Digestion

The Function Of The Oesophagus In Digestion
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The Function Of The Oesophagus In Digestion
1. Which of the following could NOT be used to describe pepsinogen?
A. it is a protein
B. it is a hormone
C. it is related to an enzyme
D. it is inactive
2. What is the function of the oesophagus in digestion?
A. It is a site of mechanical digestion.
B. It transfers food from the mouth to the stomach.
C. The oesophagus secretes amylase to begin carbohydrate digestion.
D. the oesophagus secretes hydrochloric acid.
3. What is the purpose of the mucosal barrier between the cells of the stomach
wall and the stomach contents?
A. It prevents the enzymes in the stomach contents from digesting the
stomach
B. It converts pepsinogen to its active form.
C. It prevents bacteria in the stomach from invading the stomach wall.
D. It prevents undigested food molecules from being absorbed by the stomach lining.
The Function Of The Oesophagus In Digestion
4. Which parts of the alimentary canal prepare food for chemical digestion?
A. the mouth, oesophagus and stomach.
B. the mouth, stomach and small intestine.
C. the mouth, stomach and duodenum.
D. the teeth, stomach and pancreas.
5. What food is digested by lipase?
A. nucleic acids
B. carbohydrates
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C. polypeptides
D. triglycerides
7. What is the function of bile?
A. bile hydrolyses polypeptides.
B. bile emulsifi es fats and oils.
C. bile activates procarboxypeptidase.
D. bile stimulates the pancreas to secrete pancreatic juice.
8. The liver is able to deaminate amino acids forming ammonia in the process.
What happens to the ammonia?
A. It is phagocytosed by Kupffer cells.
B. It is used in transamination to form non-essential amino acids.
C. It is converted to bile to be excreted via the gut.
D. It is converted to urea for excretion by the kidneys.
9. What happens to the products of digestion of lipids? They are absorbed into a:
A. capillary and transported by the blood to the liver.
B. capillary and transported by the blood to the heart.
C. lacteal and transported by the lymph to the heart.
D. lacteal and transported by the lymph to the liver.
10. If blood glucose is high, what does the liver do about it?
A. The liver converts glucose to glycogen or triglycerides.
B. The liver performs glycogenolysis.
C. The liver performs gluconeogenesis.
D. The liver transaminates glucose to produce amino acids.
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