Advertisements
Advertisements
प्रश्न
Describe the human salivary gland.
Advertisements
उत्तर
Salivary Glands - Three pairs in man and secrete 1000 to 1500 cc saliva per day. Saliva is slightly acidic and its pH is 6.8.
There are three types of salivary glands:
- Parotid glands: It is the largest salivary gland and situated near the ears. It opens into oral cavity by Stenoson's duct.
- Sublingual glands: It is located beneath the tongue. It opens into the floor of oral cavity by duct of Rivinus.
- Submadibular or sub-maxillary glands: It is situated at the angles of the lower jaws. It opens inot oral cavity by Whartson's duct.
Each gland secret secretes saliva which is transported to the mouth cavity. At the time secrete saliva.
APPEARS IN
संबंधित प्रश्न
What is the location and function of the villi?
Carbohydrates are bodybuilding nutrients.
Which of the organs performs the function in humans?
Absorption of food
What substances are contained in gastric juice? What are their functions?
Name the substance whose build up in the muscles during vigorous physical exercise may cause cramps.
Which one of the following pairs of types of teeth perform one common function as stated against it?
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.
What is the role of the liver and the pancreas respectively in the digestion of food?
Write true or false for the below statement. Rewrite the false statements correctly.
Absorption of food takes place in small intestine
Mention the different types of nutrition?
Describe protein digestion in the human.
Match items in column A with the appropriate items in Column B:
| Column A | Column B | ||
| 1 | HCl | a | Lactose |
| 2 | Rennin | b | Pellagra |
| 3 | Enteropeptidase | c | Rumen |
| 4 | Cellulose | d | Pepsin |
| 5 | Ptyalin | e | Starch |
| 6 | Vitamin | f | Pernicious anaemia |
| 7 | Intestinal juice | g | Trypsin |
| 8 | Bile salt | h | Casein |
| 9 | Vitamin A | i | Micelle |
| 10 | Goitre | j | Night-blindness |
| k | Iodine | ||
The question has four options. Choose the correct answer:
Uvula can close the opening of
How do we know that we are hungry and that we should now eat?
What’s the solution?
A person has fainted, and a crowd of people has surrounded him.
Why it is important to wear helmet while riding a bike?
State whether true or false. If false, correct the statement.
During digestion, proteins are broken down into amino acids.
(i)______ and (ii)______ form the common bile duct.
The passage of food into the stomach is controlled by the ______.
Why do we eat?
