State their functions.
Ill. Long Answer Type Questions:
1. Name the main orgains of the human digestive system. Also name the associated glands.
2. How do carobhydrates, fats and proteins get digested in human beings?
3. (a) What is the function of the respiration system?
(b) What are the major organs of respiratory system in humans?
4. Write the difference between breathing and respiration.
5. What is meant by human circulatory system? Name the organs of the circulatory systems in
humans.
6. Draw a diagram of the human heart and label its parts.
7. Answer the following in brief:
(a) Name the main function of blood in our body.
(b) Write the types of blood groups.
Answers
Answer:
1. The alimentary canal consists of mouth, oesophagus, stomach, small intestine, large intestine and anus. The associated glands consist of salivary glands, liver, pancreas, gastric and intestinal glands.
2.Protein:-Protein digestion occurs in the stomach and duodenum in which 3 main enzymes, pepsin secreted by the stomach and trypsin and chymotrypsin secreted by the pancreas, break down food proteins into polypeptides that are then broken down by various exopeptidases and dipeptidases into amino acids
Carbohydrate:-Carbohydrates are not chemically broken down in the stomach, but rather in the small intestine. Pancreatic amylase and the disaccharidases finish the chemical breakdown of digestible carbohydrates.
Fat:-The majority of fat digestion happens once it reaches the small intestine. This is also where the majority of nutrients are absorbed. Your pancreas produces enzymes that break down fats, carbohydrates, and proteins. Your liver produces bile that helps you digest fats and certain vitamins.
3.(a)Your respiratory system is the network of organs and tissues that help you breathe. This system helps your body absorb oxygen from the air so your organs can work. It also cleans waste gases, such as carbon dioxide, from your blood