A baby boy aged two years is admitted to play-school and passes through a dental check-up. The dentist observed that the boy had twenty teeth. Which teeth were absent?

(1) Incisors

(2) Canines

(3) Premolars

(4) Molars

Which of the following guards the opening of hepatopancreatic duct into the duodenum ?

(1) Illeocaecal valve

(2) Pyloric sphincter

(3) Sphincter of Oddi

(4) Semilunar valve

In the stomach, gastric acid is secreted by the:-
(1) parietal cells

(2) peptic cells

(3) acidic cells

(4) gastrin secreting cells

The primary dentition in human differs from permanent dentition in not having one of the

following type of teeth

1. Canine                   

2. Premolars

3. Molars                   

4. Incisors

The enzyme that is not present in succus entericus is

(1) maltase

(2) nucleases

(3) nucleosidase

(4) lipase

Which of the following statement is not correct ?

1. Brunner's glands are present in the submucosa of stomach and secret pepsinogen.

2. Goblet cells are present in the mucosa of intestine and secret mucus.

3. Oxyntic cells are present in the mucosa of stomach and secret HCl.

4. Acini are present in the pancreas and secrete carboxypeptidase

Gastric juice of infants contains?

1. maltase, pepsinogen, rennin

2. nuclease, pepsinogen, lipase

3. pepsinogen, lipase, rennin

4. amylase, rennin, pepsinogen

Which of the following enzymes carries out the initial step in the digestion of milk in humans?

1. Rennin

2. Lipase

3. Trypsin

4. Pepsin

Which one of the following statement is false regarding digestion and absorption of food in humans?

1. Oxyntic cells in our stomach secrete the proenzyme pepsinogen.

2. Glucose and amino acids are absorbed with the help of carrier ions like Na⁺.

3. Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries.

4. About 30% of starch is hydrolysed by salivary amylase in our mouth.

What will happen if the secretion of parietal cells of gastric glands is blocked with an

inhibitor?

1. Gastric juice will be deficient in chymosin

2. Gastric juice will be deficient in pepsinogen

3. In the absence of HCl secretion, inactive pepsinogen is not converted into the active

enzyme pepsin

4. Enterokinase will not be released from the duodenal mucosa and so trypsinogcn is not

converted to trypsin