DIGESTIVE
SYSTEM
1. Which of the following statement is
incorrect?
1) Ameloblasts are ectodermal in origin
2)
Ameloblasts secrete enamel to cover the total teeth
3)
Odontoblasts are mesodermal in origin 4)
Odontoblasts secrete dentine
2. Assertion
(A) : The wall of gut is prevented from being autodigested by the action
of
pepsin, tryspin and chymotrypsin
Reason (R): Pespin, trypsin, chymotrypsin are secreted as
“brush border enzymes” in
the form of pesinogen, trypsinogen and chymotrypsinogen
respectively by the wall of gut
1) Both (A) and (R) are true and (R) is the correct explanation of (A)
2) Both (A) and (R) are true but (R)
is not the correct explanation of (A)
3) (A) is true but (R) is
false 4) Both (A) and (R) are false
3. Read the following and arrange in a
sequence pertaining to the simplification of proteins that started in stomach
A. Dipeptidase B. Tripeptidase C. Trypsin D.
Pepsin
1) A-B-C-D 2)
D-C-B-A 3) A-C-D-B 4) D-A-C-B
4. Match the following and choose the
answer
|
List-I
|
List-II
|
|
A. Gastrin
|
I. Inhibition of gastric secretion
|
|
B. Enterogastrone
|
II. Secretion of HCl
|
|
C. Secretin
|
III. Secretion of bicarbonates
|
|
D. Cholecystokinin
|
IV. Secretion of enzymes into bile juice
|
|
|
V. Acts on gall bladder
|
1) A-II, B-I, C-III and D-V 2)
A-II, B-III, C-I and D-V
3)
A-II, B-I, C-III and D-IV 4) A-II, B-I,
C-V and D-IV
5. Chylomicrons are formed
in
1. Intestine lumen 2. Intestinal
mucosal cells
3. Blood capillaries 4. Lacteals
6. The following figure
showing that duct system of liver, gall bladder and pancreas. Correct one about
labeled part is
1. A – It is stimulated by secretin
2. B – Its secretion
stimulates contraction of sphincter of Oddi
3. C – Its
secretion comprises steapsin, carboxypeptidases
4. D- Conducts
digestive enzymes into duodenum
7.
The hardest substance in the human body is secreted by
1) Odontoblasts
which are ectodermal in origin
2)
Ameloblasts which are ectodermal in origin
3) Odontoblasts which are mesodermal in origin
4) Ameloblasts which are mesodermal
in origin
8.
The teeth which are not present in the milk dentition of a baby, but are
present in adult humans.
1)
Canines and premolars 2)
All Premolars and molars 3)
Incisors and molars 4)
All premolars and last molars
9.
Trace the passage of bile juice stored in the gall bladder into the lumen of
duodenum.
1)
Cystic duct
common bile ducthepatopancreatic ductlumen of duodenum 2)
Hepatic ductcystic ducthepatopancreatic ductlumen of duodenum 3)
Bile canaliculihepatic ductcommon bile ductcystic ductlumen of duodenum 4)
Hepatic ductsbile canaliculicystic ducthepatopancreatic ductlumen of duodenum
common bile ducthepatopancreatic ductlumen of duodenum 2)
Hepatic ductcystic ducthepatopancreatic ductlumen of duodenum 3)
Bile canaliculihepatic ductcommon bile ductcystic ductlumen of duodenum 4)
Hepatic ductsbile canaliculicystic ducthepatopancreatic ductlumen of duodenum
10.
Select the mismatch among the following.
1)
Cholecystokinin – contraction of gall bladder to release bile 2)
Enterokinase – activation of trypsinogen
3) Castle`s intrinsic factor –
secreted by zymogen cells
4) Lysozyme – secreted by paneth
cells
11.
Assertion (A): Bile juice is required for the activation of lipases of
pancreatic juice and intestinal lipases.
Reason (R): Bilirubin and biliverdin present in the bile juice help in
the initial emulsification of fats.
1)
Both A and R are true and R is the correct explanation of A 2)
Both A and R are true and R is not the correct explanation of A 3)
A is false but R is true 4)
A is true but R is false
12.
Study the following statements and select the correct pair among them.
I) Intestinal villi are lined by
cuboidal epithelial cells that give rise to numerous microvilli.
II) Villi and microvilli increase the
surface area of absorption.
III) Villi contain a network of lymph
capillaries and a large artery.
IV) Epithelial lining of villi
secretes mucus which helps in the protection of the wall of intestine from
action of enzymes.
1)
I & II 2) II
& III 3) II
& IV 4) All
13.
A lymphoid structure associated with the large intestine of human alimentary
canal
1)
Caecum 2)
Vermiform appendix 3)
Sigmoid colon 4)
Haustra
14.
Match the following and choose the correct combination of answer.
List – I List
– II
A. Brunner`s glands I) Mucosa
of small intestine
B. Glisson`s capsules II)
Hepatic macrophages
C. Crypts of Liberkuhn III) Sheaths of
connective tissue
D. Kupffer cells IV)
Mucosa of stomach
V)
Submucosal glands.
A B C D A B C D
1) V
III IV II 2) V
III I II 3) I
III V II 4) I
V IV II
15.
The absorption of fructose and amino acids with the help of carrier ions is
described as
1)
Simple diffusion 2)
Facilitated transport 3)
Active transport 4)
Osmosis
16.
The secretions which contain both enzymes and bicarbonates.
1)
Saliva and bile juice 2) Pancreatic juice
and bile juice 3)
Pancreatic juice and succus entericus 4)
Bile juice and gastric juice
17.
Study the following statements and select the incorrect pair among them.
I) Constipation is a condition in
which due to low water content, faeces are retained in the rectum resulting in
irregular bowl movement.
II) Diarrhoea is caused due to
improper digestion.
III) Proteins and fats yield almost
the same amount of energy on oxidation.
IV) Vomiting controlling centre is
located in Medulla oblongata of brain.
1)
I & II 2)
II & III 3) III
& IV 4) I & IV
18. Assertion (A): The undigested
and unabsorbed substances in small intestine which mostly contain
fibre of plant is called roughage.
Reason (R): Maximum absorption of the end products of digestion occurs
in the small intestine.
1)
Both A and R are true and R is not the correct explanation of A 2) Both A and R are true and R
is the correct explanation of A 3)
A is true but R is false 4) A is false
but R is true
19.
Select the correct statement among the following.
1)
Chyme is formed in the stomach and it contains partially digested proteins and
carbohydrates.
2) Mucus produced by the wall of
stomach forms a physical barrier to prevent trypsin from damaging the wall of
stomach.
3) The enzymes present in the
pancreatic juice and secretions of intestinal glands together constitutes
succus entericus.
4) HCl secreted by the parietal cells
of the fundic glands, activate pepsin and rennin into pepsinogen and prorennin
respectively.
20.
Select the correct statements among the following
I) The products of digestion of fats
combine with bile salts to form micelles in the lumen of ileum.
II) Chylomicrons are transported into
blood capillaries by exocytosis.
III) In the blood stream of
subclavian vein, chylomicrons are broken down into fatty acids and glycerol.
IV) Absorption of water, drugs and
minerals occurs mainly in stomach.
1)
I & II 2)
I & III 3) II
& III 4) All
21.
Study the following table and select the correct combination of answers.
Secretion Production site Action
A. Gastrin Epithelium of stomach Stimulates secretion of HCl and pepsinogen
B. Secretin Epithelium of duodenum Enhances gastric motility
C. Cholecystokinin Epithelium of duodenum Stimulates secretions of water
and bicarbonates
of pancreatic juice
D. Lysozyme Serous cells of salivary glands Bactericidal action.
1)
A & B 2) B &
C 3) C & D 4) A & D
22.
Which one of the following activity is not carried out by liver and its
secretions?
1)
Activation of lipases of pancreatic juice and intestinal lipases.
2) Synthesis of plasma proteins like
albuminus & globulins and blood clotting factors such as fibrinogen and
prothrombin.
3) Conversion of fats into
fatty acids and glycerol. 4)
Conversion of lactic acid into glycogen.
23.
Enzymes acting upon nuclic acids are present in
1)
Pancreatic juice and intestinal juice. 2)
Bile juice and pancreatic juice 3)
Saliva and gastric juice 4) Gastric juice
and pancreatic juice
24.
The amount of energy yielded by 1 gm of proteins and fats respectively.
1)
4.0 Cal and 9.0 Cal 2)
9.0 Cal and 4.0 Cal
3) 4.0 K.Cal and 9.0 K.Cal 4) 9.0 K.Cal and
4.0 K.Cal
25.
Chilomicrons 
Fatty acids and
glycerol. Here ‘X’ means
Fatty acids and
glycerol. Here ‘X’ means
1)
Lipoprotein lipase of pancreas 2)
Lipoprotein lipase of liver 3)
Lipoprotein lipase of small intestine 4)
Lipoprotein lipase of endothelial wall
26.
Which of the following is not a function of largest gland?
1)
Thermogenesis 2)
Ornithine cycle 3)
Production of heparin 4)
Secretion of steapsin
27.
Saliva contains
1)
Ptyalin 2) Mucin 3) Lysozyme 4) All
28.
The following are the statements regarding “Universal tooth brush”.
I) It is a muscular sense organ.
II) A fold of tissue which attaches
it to the floor of the oral cavity is called gingiva.
III) It helps in mixing saliva with
food and deglutition.
IV) It also helps in taste detection
and speaking.
Which of the above are correct?
1)
All 2)
All except II 3) I, II and IV
only 4) II and III only
29.
Teeth are
1)
Endo, mesodermal in origin 2)
Ecto, endodermal in origin 3)
Ecto, mesodermal in origin 4)
Ecto, endo, mesoderal in origin
30. SUBSTRATE ENZYME PRODUCTS
Nucleotides A Nucleosides
+ Phosphates
B Pepsin Peptones
Sucrose C Glucose
+ Fructose
Fats Bile salts D
Here
A, B, C and D respectively are
1)
Nueleotidases; Calcium para caseinate; Invertase; Monoglycerides
2) Nucleosidases; Proteins; Sucrase;
Fatty acid and glycerol
3) Nucleosidases; Proteins;
Invertase; Monoglycerides
4)
Nucleotidases; Calcium paracaseinate; Sucrase; emulsified fats
31.
The type of papillae present at the tip of tongue is
1)
Filiform papillae 2) Foliate
papillae
3) Fungiform papillae 4)
Circumvallate papillae
32.
Hormone gastrin is secreted by
1) Cardiac glands 2)
Chief cells of oxyntic glands 3) Pyloric glands 4)
Parietal cells of oxyntic glands
33.
Auto catalysis in alkaline medium is exhibited by
1)
Chymotrypsinogen 2) Pepsinogen
3) Trypsinogen 4)
Both 2 & 3
34.
Arrange the following in a correct sequence of decreasing complexity.
A) Liver B) Hepatic cells C) Hepatic
lobules
D) Hepatic cords E)
Liver lobes
1)
A E C B D 2)
B D E C A
E C B D 2)
B D E C A
3)
A E C D B 4)
B E D C A
E C D B 4)
B E D C A
35.
Angiotensinogen is a protein produced by
1)
The organ in which ornithine cycle takes place
2) The organ which eliminates urea
3) The organ which releases ADH 4)
The organ which releases Renin
36.
Match the following
Column I (Cells) Column
–II (Parts)
A. Kupffer`s cells I.
Salivary glands
B. Paneth cells II.
Bowman`s capsule
C. Serous cells III.
Base of Intestine gland
D. J.G cells IV.
Liver
E. Podocytes V.
Afferent renal arteriole A B C D E A B C D E
1) IV
III II I
V 2) IV
III I II
V
3)
IV III V
I III 4) IV
III I V
II
37.
Chilomicrons are formed in
1)
Intestinal lumen 2)
Intestinal mucosal cells
3) Blood capillaries 4)
Lacteals
38.
What will happen if the secretion of parietal cells of the gut epithelium is blocked
with an inhibitor?
1)
Trypsinogen is not converted to trypsin
2) Deficiency of chymotrypsin in
gastric juice
3) Deficiency of pepsinogen in
gastric juice
4) Inactive pepsinogen is not
converted into the active enzyme pepsin
39.
Which of the following are correct statements?
I.
The number of monophyodont teeth in adult man is similar to the number of
thoracie vertebrae in adult man.
II. The number of cheek teeth in
adult man is similar to number of milk teeth
III.
The number of vertebro-sternal ribs is similar to the number of phalanges in
ONE fore limb
IV. The number of wisdom teeth is
similar to the number of false ribs
1)
I, III, IV 2) I, II, IV 3) I, II, III 4) All
40.
Odd
one in the following with reference to location is
1)Adenoids 2)Palatine
tonsils
3)Abdominal
tonsil 4)Lingual
tonsils
41.
Following
are the different layers in a tooth
A)Dentine B)Cementum C)Pulp
cavity
D)Periodontal membrane E)Jaw bone F) Layer of
odontoblasts
Arrange them in sequence from
outside to inside.
1)E-D-B-A-F-C 2)E-A-B-F-D-C 3)C-E-D-B-A-F 4)C-E-A-D-B-F
42.
Final
step in the digestion of nucleic acids is catalysed by
1)Phosphatase 2)Nucleosidases 3)Nucleotidases 4)Nucleases
43.
Study
the following statements and choose the correct answer
i)Neutral fats are stored in the
adipose tissue and liver
ii)Small protein coated fat
globules called micelles are transported into lacteals by exocytosis
iii) Peristaltic movements of
intestine are fast and help in the transport of nutrients into the ileum
iv)Calorific value of 1gm of fats
is more than the calorific value of 1gm of carbohydrates and 1gm of proteins
put together
1)i
& ii 2)ii
& iii 3)i
& iv 4)ii
& iv
44.
Assertion(A):
Absorption of glucose into the epithetial cells occurs by simple diffusion and
into blood from these cells by active
transport.
Reason(R ): Glucose content in the
epithelial cells is lesser than its content in the lumen of intestine and
blood.
1)A
& R are true R explains A 2)A&R
are true R does not explain A
3)A
is true but R is false 4)A is false but
R is true
45.
Portion
of pharynx that is a common chamber for the passage of food and air is
1)Oropharynx 2)Buccal
cavity
3)Laryngopharynx 4)Nasal
passages
46. Arrange the following sphincters in a
sequence from anterior to psterrior parts of
alimentary canal
A. Phyloric sphincter B.
Gastro-oesophageal sphincter
C. Anal sphincter with smooth muscles D. Anal sphincter with striated
muscles
1)
A, B, C, D 2) D, B, C,
A 3) B, A, C, D 4) C, B, A, D
47. Which of the following occur in acidic
medium
I. 
II. 
III. 
IV. 
1)
Only
I and II 2)
Only I & III
3) All 4)
All except III
48. Lipoprotein lipase is secreted by
1)
Gastric glands 2) Pancrease 3)
Endothelial cells 4)
Salivary glands
49. Read
the following and arrange them in correct sequence of transport of fatty acids
and glycerol from the ileum into the hapatocytes.
A.
Exocytosis D.
Micelles
B.
Left subclavian vein E.
Thoracic duct
C.
Lipoprotein lipase F. Chilomicrons
G.
Lacteals
1)
F-A-G-D-E-B-C 2)
D-F-A-G-E-B-C
3)
D-A-E-G-F-C-E 4)
G-F-E-D-C-B-A
50. Sites
of synthesis of urea and glycogen are located in the liver and their synthesis
which are involved respectively
1)
Pre-erythrocytic and coricycle 2)
Ornithine cycle and Exo-erythrocytic cycle
3)
Cross-bridge cycle and ornithine cycle 4) Ornithine cycle and cori cycle
51. Salivary
amylase action requires a pH of
1)
5.8 pH 2)
6.8 pH 3) 7.8 pH 4) 8.8 pH
52. One of the following is not a constituent
of pancreatic juice
1) Trypsinogen 2) Chymotrypsinnogen 3) Enterokinase 4) Carboxy peptidase
53. The papillae present at anterior margin and
tip of tongue of humans
1)
filiform papillae 2) fungiform
papillae 3) circumvallate papillae 4) foliate papillae
54. Papillae present on the posterior surface
of human tongue are
1)
Filiform papillae 2)
Circumvallate papillae
3)
Fungiform papillae 4) Pharyngeal
papillae
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