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The largest gland in the human body is ______.
What is the location and function of the villi?
Which part of the digestive canal is involved in:
Killing of bacteria ______.
Match the items of Column I with suitable items in Column II.
| Column I | Column II | ||
| (a) | Salivary gland | (i) | Bile juice secretion |
| (b) | Stomach | (ii) | Storage of undigested food |
| (c) | Liver | (iii) | Saliva secretion |
| (d) | Rectum | (iv) | Acid release |
| (e) | Small intestine | (v) | Digestion is completed |
| (f) | Large intestine | (vi) | Absorption of water |
| (vii) | Release of faeces |
The process of digestion of food in humans begins in ______.
| If the teeth are not cleaned regularly, they become covered with a sticky yellowish layer W of food particles and bacteria. Since layer W covers the teeth, the alkaline liquid X secreted by glands Y inside the mouth cannot reach the teeth surface to neutralise the acid formed by the action of organisms Z on sugary food, and hence tooth decay sets in. |
- What is W known as?
- What are (i) X and (ii) Y?
- What are organisms Z?
- State one way of removing layer W from the teeth.
Gastric juice contains
How is the liver an important organ in our body?
Give any four reasons why water is necessary in our body.
What is the main function of bile?
How is the small intestine best suited for the digestion and absorption of food?
State the four ways in which saliva is useful to us.
Write short answers
What do you mean by the emulsification of fat?
State one difference in nutrition: Parasite and Saprophyte
State one difference in nutrition: Holophylic and Holozoic
The question has four options. Choose the correct answer:
Teeth present in the upper molar of human beings are
The process by which the body removes waste is called ______.
List the glands associated with digestion.
