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Human Digestion

MCQ ON HUMAN DIGESTION

This quiz contains 20 multiple choice questions on digestion of food in human. Choose the most appropriate answers for the questions. Good Luck!

1 / 20

1. The saliva secreted into the oral cavity contains
   1.   Both A and B
   2.   Electrolytes, salivary amylase and lysozyme
   3.   Maltose, starch and lysozyme
   4.   Electrolytes, amylase and proteolytic enzymes
2. Hepato pancreatic duct is ended with a sphincter called
   1.   Hepatic sphincter
   2.   Both B and C
   3.   Sphincter of oddi
   4.   Gastrooesophageal phincter
3. The three pairs of salivary glands producing saliva are
   1.   Parotids, Sub-mandibular and sub-linguals
   2.   All of these
   3.   Parotids, Sub-mendelian and sub-mucosal
   4.   Both A and B
4. Dental formula for arrangement of teeth in each half of the upper and lower jaw is
   1.   2231/2231
   2.   2123/2123
   3.   1223/1223
   4.   2121/2121
5. Successive waves of muscular contractions of oesophagus while bolus passes through it is called
   1.   Peristalsis
   2.   Periodic stalsis
   3.   stalsis
   4.   Both B and C
6. Duct from gall bladder connecting common bile duct is
   1.   Both A and B
   2.   None of these
   3.   Cystic duct
   4.   Cystolic duct
7. The structural and functional units of liver containing hepatic cells arranged in the form of cords is termed
   1.   Both B and C
   2.   Hepatic lobes
   3.   Hepatic lobules
   4.   Hepatic duct
8. Bioconversion of inactive trypsinogen into brypsin done by
   1.   Enterokinase
   2.   H and Cl
   3.   HCl
   4.   Intestinal juice
9. Proenzyme pepsinogen is activated into pepsin by
   1.   H and Cl
   2.   HCl (pH 6.8)
   3.   Both B and C
   4.   HCl (pH 1.8)
10. Thecodont is
    1.   
    2.   Replacement of temporary milk or deciduous teeth by a set of permanent or adult teeth
    3.   Both A and C
    4.   Presence of four different teeth viz. incisors (I), canine (C), premolars (PM) and molars (M)
    5.   Embedment of teeth in the socket of jaw bone
11. The tongue is a freely movable muscular organ attached to the floor of the oral cavity by
    1.   papillae
    2.   Mandible
    3.   Both A and C
    4.   frenulum
12. Bioconversion of proteins into proteoses and peptones is done by
    1.   Pepsin
    2.   Both B and C
    3.   Peptase
    4.   Pepsinogen
13. Mucus in saliva is responsible for
    1.   Swallowing bolus.
    2.   Deglutition
    3.   Protecting
    4.   Lubricating and adhering the masticated food particles into a bolus.
14. The function of Bile juice is to
    1.   help in emulsification of saturated fats into unsaturated fat
    2.   Both A and B
    3.   Activates lipases and emulsify fats
    4.   All of these
15. Two major functions performed by buccal cavity are
    1.   Both A and B
    2.   Helps in digestion of starch and maltose
    3.   Secretion of saliva and facilitation of swallowing
    4.   Mastication of food and
       facilitation of swallowing
16. Gastric glands of stomach have three major types of cells namely
    1.   Mucus neck cells, peptic cell and chief cells
    2.   Chief cell, peptic cell and chief cells
    3.   Mucus neck cells, chief cells and oxyntic cells
    4.   Peptic cell, parietal cell and oxyntic cells
17. Lysozyme present in saliva has
    1.   Enzymatic property
    2.   Antibacterial property
    3.   Bacterial property
    4.   Both A and C
18. A proteolytic enzyme found in gastric juice of infants which helps in the digestion of milk proteins is
    1.   Both B and C
    2.   Rennin
    3.   Pepsin
    4.   Reninogen
19. Pancreas is an exocrine gland because
    1.   All of these
    2.   The endocrine portion of pancreas secretes hormones, insulin and glucagon.
    3.   Both A and B
    4.   Pancreas secretes an alkaline pancreatic juice containing enzymes
20. Excoriation of mucosal epithelium by the highly concentrated HCl (1.8) is prevented by
    1.   Water present in stomach
    2.   Mucosal layer of stomach
    3.   Mucus and bicarbonates present in gastric juice
    4.   All of these