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प्रश्न
Answer in detail.
Liver does not secrete any enzymes yet it helps indigestion. How?
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उत्तर
The liver does not secrete any enzyme yet it helps in digestion it secretes bile which helps in digestion of fats by breaking down fats into tiny droplets to provide a larger surface area for the enzymes to act. This process is called the emulsification of fats. Bile secreted by the liver is stored in the gall bladder. Bile provides an alkaline medium in the duodenum for the action of enzymes of the pancreatic juice
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संबंधित प्रश्न
Which part of the digestive canal is involved in:
Killing of bacteria ______.
Which part of alimentary canal receives bile from the liver?
(a) oesophagus
(b) small intestine
(c) stomach
(d) large intestine
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?
Write True or False in the following statement
Molars help in cutting and tearing food.
State whether the following statement is True or False.
Saliva changes starch into maltose.
Put the following processes in their correct sequence of occurrence during digestion.
peristalsis; tongue pushes the food; grinding and mixing saliva; cutting and tearing of food
Complete the following enzymatic reaction.
Fats \[\ce{->[lipase]}\] ___________+__________
The question has four options. Choose the correct answer:
The dental formula of human beings is
The pyloric sphincter guards the passage between the ____________.
Fill in the blanks using the words listed below.
| water, front, intestinal, salts, pseudopodia, back, vacuole |
- The digestion of all food components is completed by the ______ juice.
- Large intestine absorbs ______ and some ______ from the undigested food.
- Tongue is attached at the ______ to the floor of the mouth cavity and is free at the ______.
- Amoeba pushes out ______ around the food and traps it in a food ______.
