Advertisements
Advertisements
Question
Sketch and label a diagram of the digestive system and describe it in your own words.
Advertisements
Solution
Digestive system
The major constituent organs of the human digestive system are the buccal cavity, oesophagus, stomach, small intestine, large intestine, rectum, and anus.
- Buccal cavity: It includes the teeth, saliva and tongue. The teeth break down the food. Digestion of food begins in the mouth. The tongue helps in the chewing and swallowing of food.
- Oesophagus: The food passes from the mouth, down the oesophagus, into the stomach as a result of the movement of the walls of the oesophagus.
- Stomach: It mixes the food received from the oesophagus with digestive juices.
- Small intestine: The food from the stomach moves into the small intestine, which receives intestinal juices from two.
- Gallbladder: Stores bile and releases it into the small intestine when needed.
- Pancreas: Produces enzymes that help digest proteins, fats, and carbs.
- Glands: the liver and pancreas. These juices help in the further digestion of food.
- Large intestine: Water is absorbed in the large intestine.
- Rectum and anus: Undigested food particles are thrown out with the help of the rectum and anus.
RELATED QUESTIONS
What is the function of digestive enzymes?
Why do we get instant energy from glucose?
In human digestive system, the enzymes pepsin and trypsin are secreted respectively by ______.
Write one function each of the following enzymes:
Lipase
Fill in the blanks.
Incisors are used for _____ and _____ the food.
Given alongside is the diagram of the human alimentary canal.
(i) Name the parts 1-11 indicated by guidelines.
1.____ 2.____ 3.____ 4.____ 5.____ 6.____ 7.____ 8.____ 9.____ 10.___ 11.____
(ii) State the function of the juice secreted by the part 1.
(iii) State the function of the three enzymes found in the juice secreted by part 3.
Answer in detail.
What changes occur in food in the mouth?
Describe the digestion of starch.
Describe the process of digestion in human beings.
Use your brain power!
Why do we sometimes choke suddenly while eating?
Write down the explanation.
Explain why human dentition is considered as thecodont, diphydont and heterodont.
List out the functions of the digestive system.
Analogy
Enzymes: Digestive glands:: _______: Endocrine glands.
Identify which three of the following terminologies is true for human dentition.
Select the correct pair of peptide hormones secreted by the alimentary canal.
The exit of unabsorbed food material is regulated by ____________.
What are the compounds present in the food?
During deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in the
Solve the crossword given as Figure.
| Across | Down | ||
| 1. | Cream-coloured digestive gland | 2. | Feeds with the help of pseudopodia |
| 3. | Undigested excretory solid residues | 6. | Total number of molars in one jaw of an adult |
| 4. | Organ that mixes saliva with the food | 8. | Largest gland |
| 5. | Point of defecation | 9. | Watery secretion in the mouth |
| 7. | Stored in gall bladder | 11. | A ruminant |
| 10. | Finger-like outgrowth in the small intestine | 12. | Form of food chewed by ruminants |
| 13. | Kind of taste buds | ||
| 14. | Kills bacteria in the stomach | ||
