Muscularis layer in the wall of the alimentary canal is formed by smooth muscles usually arranged into:-
1. an inner circular and an outer longitudinal layer.
2. an inner longitudinal and an outer circular layer.
3. both circular layers
4. both longitudinal layers
Which of the following gastric secretory cells is correctly matched with its secretion(s)?
1. Chief cells - gastrin
2. parietal cells -- hydrochloric acid and intrinsic factor
3. enteroendocrine cells -- mucus and hormones
4. mucous cells -- pepsinogen and mucus
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