Sphincter of Oddi will guard the opening of

1. A

2. B

3. C

4. D

The intrinsic nervous system that is responsible for peristalisis is present in which part shown in the given transverse section of the human gut ?

1. A

2. B

3. C

4. D

Study the given diagram and choose the correct statements :

I. A is involved in the absorption of fatty acids

II. B is a gland

1. Only I

2. Only II

3. Both I and II

4. Neither I nor II

In the given diagram showing anatomical regions of the human stomach, A,B and C respectively represent :

1. Fundus, Cardia and Pylorus

2. Cardia, Pylorus and Fundus

3. Fundus, Pylorus and Cardia

4. Pylorus, Cardia and Fundus

The enzyme that is not present in succus entericus is

(1) maltase

(2) nucleases

(3) nucleosidase

(4) lipase

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

The following is a scheme showing the fate of carbohydrates during digestion in the

human alimentary canal. Identify the enzymes acting at stages indicated as A, B, C

and D. Choose the correct option from those given.

1. A = Amylase, B = Maltase, C = Lactase,D = Invertase

2. A = Amylase, B = Maltase, C = Invertase,D = Lactase

3. A = Amylase, B = Invertase, C = Maltase, D = Lactase

4. A = Amylase, B = Lactase, C = Maltase, D = Invertase

Which of the following gastric secretions is correctly matched with its source?
(1) Pepsin-Chief cells

(2) Chymotrypsin-Parietal cells

(3) HCl-Goblet cells

(4) Mucus-Oxyntic cells

In mammals, the teeth are.
I. only two sets, present throughout life.
II. embedded in the socket of the jaw bones.
III. different types.

These conditions are respectively referred as
1. diphyodont, heterodont and thecodont
2. diphyodont, thecodont and heterodont
3. the codont, diphyodont and heterodont
4. the codon, heterodont and diphyodont