Identify the correct statement with reference to human digestive system

  • Serosa is the innermost layer of the alimentary canal.

  • Ileum is a highly coiled part

  • Vermiform appendix arises from duodenum

  • Ileum opens into small intestine

When each tooth is embedded in a socket of jaw bone, then this type of attachment is called

  • Thecodont

  • Lophodont

  • Secodont

  • Solenodont

Oral cavity leads into a short pharynx which serves as a common passage for

  • Food only

  • Air only

  • Food and air

  • Digestive juices

Which of the following prevents the entry of food into the wind pipe?

  • Glottis

  • Pharynx

  • Epiglottis

  • Both (1) & (2)

The common passage for food and air is

  • Oesophagus

  • Pharynx

  • Trachea

  • Glottis

Which organ of the following is present in abdominal cavity, just below diaphragm.

  • Pharynx

  • Pancreas

  • Liver

  • Tongue

The wall of alimentary canal from oesophagus to rectum possesses _____ layers.

  • 2 layers

  • 3 layers

  • 4 layers

  • 5 layers

Which of the following statement is incorrect w.r.t. histology of alimentary canal?

  • Serosa is the outermost layer made up of a thin mesothelium with some connective tissue

  • Muscularis layer is formed by smooth muscles usually arranged into an inner longitudinal layer and circular layer

  • Submucosal layer is formed of loose connective tissue

  • An oblique muscle layer may be present in stomach

Brush border columnar epithelium is the lining of

  • Stomach

  • Oesophagus

  • Proximal convoluted tubules

  • Small intestine

In which layer of stomach are the gastric glands located?

  • Serosa

  • Mucosa

  • Submucosa

  • Muscularis mucosa

Pyloric sphincter regulates the opening of

  • Pharynx into oesophagus

  • Oesophagus into stomach

  • Stomach into duodenum

  • lleum into large intestine

Thecodont, diphyodont and heterodont teeth are the characteristic of

  • Reptiles

  • Aves

  • Amphibians

  • Mammals

The intrinsic factor that helps in the absorption of vitamin B12 is secreted by-

  • Goblet cells

  • Hepatic cells

  • Oxyntic cells

  • Chief cells

The proteolytic enzyme rennin is found in :

  • Intestinal juice

  • Bile juice

  • Gastric juice

  • Pancreatic juice

Succus entericus is referred to as:

  • Gastric juice

  • Chyme

  • Pancreatic juice

  • Intestinal juice

Sphincter of oddi is present at :

  • Gastro-oesophageal junction

  • Junction of jejunum and duodenum

  • Ileo-caecal junction

  • Junction of hepato-pancreatic duct and duodenum

The muscularis layer in the wall of the GIT normally has:
 
  • smooth muscles organized into an inner circular and an outer longitudinal layer
  • smooth muscles organized into an outer circular and an inner longitudinal layer
  • skeletal muscles organized into an inner circular and an outer longitudinal layer
  • skeletal muscles organized into an outer circular and an inner longitudinal layer
Both hormones and digestive enzymes are secreted by all of the following except:
 
  • Pancreas
  • Stomach
  • Intestine
  • Liver
Normally Kwashiokor occurs when:
 
  • the birth weight of the new born is less than 2 kg and does not increase to 3 kg at six months
  • mother’s milk is replaced by high-calorie low protein diet
  • hidden hunger causes vitamin and mineral deficiencies
  • child is exposed to excessive environmental pollution and passive smoking
Gastric glands do not secrete:
  • Proteolytic enzymes
  • Hormone
  • Lipases
  • Amylases
Which of the following is not guarded by the presence of a sphincter?
  • Opening of Oesophagus into Stomach
  • Opening of Stomach into Duodenum
  • Opening of Ileum into Jejunum
  • Opening of common hepato-pancreatic duct into duodenum
Chylomicrons are:
  • lipid coated proteinoid mixtures
  • protein coated fat globules
  • glycoprotein coated nucleic acids
  • closed bilayer structures spontaneously formed by hydrated phospholipids
The mucosa lining of the alimentary canal does not:
  • have goblet cells
  • form gastric glands
  • have Brunner’s glands
  • form crypts of Lieberkuhn
Identify the incorrect statement regarding bile:
  • It can activate lipases
  • It contains digestive enzymes working at acidic pH
  • It contains bile pigments
  • It helps in emulsification of fats
Match each item in Column I with one in COLUMN II and select the correct match from the codes given:
COLUMN I COLUMN II
A Saliva P Intrinsic factor
B Gastric secretion Q Nuclease
C Pancreatic juice R Lysozyme
D Succus entericus S Nucleosidase
 
Codes
A B C D
1. R P Q S
2. P Q S R
3. Q S R P
4 S R P Q

 
  • 1
  • 2
  • 3
  • 4
Which of the given differences between Kwashiorkor and Marasmus are correct?
Kwashiokor Marasmus
I. Age incidence More than one year Less than one year
II. Deficiency of Proteins Proteins and calories
III. Clinical feature Extreme emaciation Extensive oedema

 
  • Only I and II
  • Only I and III
  • Only II and III
  • I, II and III
Which of the following proteolytic enzymes is not secreted by the pancreas in humans?
 
  • Carboxypeptidase
  • Trypsin
  • Dipeptidase
  • Chymotrypsin
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