Advertisements
Advertisements
प्रश्न
How do we know that we are hungry and that we should now eat?
Advertisements
उत्तर
When the level of energy giving substances present in the blood falls down, our brain can understand it. The brain tells us that 'we are hungry and we should eat something to restore this level.· Thus, the coordinating brain gives us order to eat.
APPEARS IN
संबंधित प्रश्न
What is the role of saliva in the digestion of food?
Name the main organs of the human digestive system. Also name the associated glands.
When a person eats sugary food, then organisms A present in his mouth act on sugar to produce a substance B. The substance B first dissolves the calcium salts from the top part C of the tooth and then from its middle part D forming holes E. These holes ultimately reach the part F in the lower part of tooth which contains nerves and blood vessels. The substance B irritates the nerve endings inside the tooth causing toothache.
(a) What are (i) organisms A, and (ii) substance B?
(b) What are (i) part C, and (ii) part D, of tooth known as?
(c) By what name are the holes E in the tooth known?
(d) Name the part F of the tooth.
(e) What will happen if organisms A reach part F of the tooth known?
With which human organ system (or human systems) is villi associated?
Define the following term :
Omnivore
Study the diagram given below and then answer the question that follows:
Give the total number of the type of tooth mentioned in '1' above, in the mouth of an adult and state its function.
Correct the spellings: Bilirubin
Name the enzymes secreted by the following: Ileum
Salivary glands secrete ______.
______ is a major organ for the digestion of food materials.
