The pancreas is an elongated gland that is below the stomach. It produces pancreatic juice that contains digestive enzymes. The pancreas also secrets insulin into the blood. Insulin is needed to allow glucose or sugar from food to get into the bloodstream. People who cannot produce insulin are diabetics.
The largest gland in the body is the liver. It is on the right side of the body underneath the ribs. It weighs about three pounds and is eight inches long. The liver stores a form of glucose called glycogen. Vitamin A is manufactured in the liver. Bile which is needed to breakdown fat, is made in the liver. This organ is also where alcohol, drugs, bacteria and old blood cells are broken down and removed from the body. Damage to the liver can be serious because this organ is extremely necessary to life.
The gallbladder is a small sac on the underside of the right lobe of the liver. It stores bile that is made by the liver. Bile travels from the liver through the hepatic ducts to the gallbladder. It holds about two ounces of bile. Bile is needed to breakdown the fat that is in food.
Vocabulary
1. mandible
2. to grind
3. root
4. crown
5. jaw
6. narrow
7. gum
8. gradually
9. permanent teeth
10. saliva
11. to squirt
12. starch
13. to swallow
14. sac
15. acid
16. lining
17. squeezing
18. peristalsis
19. growling
20. villi
21. absorb
22. feces
23. colon
24. elongated
25. to store
26. lobe
27. bile
Questions
1. What is the structure of digestive system?
2. How many permanent teeth has an adult person?
3. What is the function of stomach, liver?
4. What is the largest gland of the body?
5. Whereisliversituated?
Crossword