Duct leading from parotid gland and opening into vestibule is 

  • Haversian duct

  • Stenson's duct

  • Wolffian duct

  • Infra-orbital duct

A certain person eats boiled potato; one of the food component in it is 

  • lactose which is indigestible

  • starch which does not get digested

  • cellulose which is digested by intestinal cellulos

  • DNA which gets digested by pancreatic DNAase

In man the zymogen or chief cells are mainly found in 

  • cardiac part of stomach

  • pyloric part of stomach

  • duodenum

  • fundic part of stomach

Which part of body secretes the hormone secretin ?

  • Oesophagus

  • Duodenum

  • Stomach

  • lleum

The layer of cells that secret enamel of tooth is: 

  • dentoblast

  • ameloblast

  • osteoblast

  • odontoblast

The contraction of gall bladder is due to

  • gastrin

  • secretin

  • cholecystokinin

  • enterogasterone

Brunner's glands occur in

  • sub-mucosa of duodenum

  • sub-mucosa of stomach

  • mucosa of oesophagus

  • mucosa of ileum

Duodenum has characteristic Brunner's glands which secret two hormones called 

  • kinase, estrogen

  • secretin, cholecystokinin

  • prolactin, parathromone

  • estradion, progesterone

Pancreas produces 

  • three digestive enzymes and one hormone

  • three digestive enzymes and two hormones

  • two digestive enzymes and one hormone

  • three digestive enzymes and no hormone

Secretin and cholecystokinin are digestive hormones. They are secreted in

  • oesophagus

  • ileum

  • duodenum

  • pyloric stomach

Carrier proteins faciliate the absorption of substance like

  • amino acids and glucose

  • glucose and fatty acids

  • fatty acids and glycerol

  • fructose and some amino acids

The vitamin-C or ascorbic acid prevents 

  • rickets

  • pellagra

  • scurvy

  • antibody synthesis

Which group of three of the following five statements (A-E) contains all three correct statements regarding beri-beri ? 

A. A crippling disease prevalent among the native population of sub-Sahara Africa

B. A deficiency disease caused by lack of thiamine (vitamin-B,)

C. A nutritional disorder in infants and young children when the diet is persistently deficient in essential protein

D. Occurs in those countries where the staple diet is polished rice

E. The symptoms are pain from neuritis, paralysis, muscle wasting, progressive oedema, mental deterioration and finally heart failure

  • A, B and D

  • B, C and E

  • A, C and E

  • 4 B, D and E

Secretion of gastric juice is stopped by 

  • gastrin

  • pancreozymin

  • cholecystokinin

  • enterogasterone

Emulsification of fat will not occur in the absence of 

  • lipase

  • bile salts

  • bile pigments

  • pancreatic juice

Wharton's duct is associated with 

  • sub-lingual salivary duct

  • parotid salivary duct

  • sub-maxillary salivary gland

  • Brunner's glands

Which of the following is mismatched ?

  • Vitamin-K           -- Beri-beri

  • Vitamin-D           -- Rickets

  • Vitamin-C            -- Scurvy

  • Vitamin-A            -- Xerophthalmia

Many of the pancreatic enzymes must be activated by trypsin before they can begin digesting food, but trypsin itself requires the activating effect of

  • chymotrypsin

  • carboxypeptidase

  • phospholipase

  • enterokinase

Gastric secretion is stimulated by all except

  • Secretin

  • Gastric distension

  • Gastrin

  • Vagal stimulus

The portion of human stomach into which the oesophagus opens is the:-

  • Cardiac
  • Fundus
  • Corpus
  • Pylorus

Muscularis layer of the wall of the alimentary canal is formed by:-

  • Smooth muscle arranged into an inner longitudinal and an outer circular layer

  • Smooth muscle arranged into an inner circular and an outer longitudinal layer

  • Skeletal muscle arranged into an inner longitudinal and an outer circular layer

  • Skeletal muscle arranged into an inner circular and an outer longitudinal layer

The optimum pH for the enzyme salivary amylase is:

  • 4.5

  • 6.8

  • 7.3

  • 8.2

Intrinsic factor is secreted by the_cells of the human stomach.

  • Mucus neck cells

  • Chief cells
  • Oxyntic cells
  • G-cells

Which of the following is a sub-mucosal gland?

  • Oxyntic glands of stomach

  • Crypts of Lieberkuhn of small intestine

  • Brunner's glands of the duodenum

  • Goblet cells

To move into the intestinal mucosa, fatty acids and glycerol are first incorporated into:

  • Chyle

  • Micelles

  • Chylomicroms

  • Lipoproteins

A mass peristaltic movement is responsible for:-

  • Release of bile and pancreatic juice into the duodenum

  • Passage of chyme from stomach to duodenum
  • Vomiting
  • Defecation

Populations subsisting primarily on corn would likely to suffer from:

  • PEM

  • Pellagra

  • Bleeding disorders

  • Beri beri

Which of the following glandular secretions involved in digestion would be most likely released initially as inactive precursors ?

  • protein-digesting enzymes

  • fat-solublizing bile salts

  • acid-neutralising bicarbonate

  • hormones such as gastrin

What prevents the back flow of the fecal matter into the small intestine?

  • Ileo-caecal valve

  • Sphincter of Boyden

  • Meckel's diverticulum

  • Plicae semilunaris

The parietal cells or the oxyntic cells located in the stomach's gastric pits mainly secrete:-

  • HCI and Intrinsic factor
  • Pepsinogen and Gastric lipase
  • Pepsinogen and Pro-rennin
  • Gastrin and Mucus

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Practice Zoology Quiz Questions and Answers