Physiology of Stomach

Q. Which two enzymes are present in human gastric juice?

1. HCL and pepsin
2. Trypsin and rennin
3. Pepsin and rennin
4. Trypsin and erepsin

Q. Absorption of alcohol takes place in the

1. Stomach
2. Oral cavity
3. Small intestine
4. Large intestine

Q. In the stomach, gastric acid is secreted by the:

1. gastrin secreting cells
2. parietal cells
3. peptic cells
4. acidic cells

Q.

In which part of alimentary canal does absorption of water, simple sugars and alcohol takes place?

Q. When parietal cells are stimulated, they secrete:

1. HCl and intrinsic factor
2. HCl and pepsinogen
3. $HC{O_3}^{-}$ and intrinsic factor
4. Mucus and pepsinogen

Q.

Read the following passage carefully and answer the questions that follow it. Bile juice is stored in a sac called, the gall bladder, located near its organ of secretion, the liver. The gall bladder releases the bile juice into the small intestine whenever food reaches there. Though bile juice is devoid of any digestive enzymes, it is required for the digestion of fats. The fats cannot be digested easily because they are insoluble in water and are present as large globules. Bile juice breaks down big fat droplets into smaller droplets. These are then easily digested by the enzymes released from the pancreas.

(a) Which organ secretes the bile juice?

(b) Why is digestion of fats difficult as compared to that of other nutrients?

(c) How does bile juice help in the digestion of fat?

(d) Where is the digestion of fat completed?

(e) Does bile juice digest fat completely?

Q.

The stomach releases hydrochloric acid and ___________ juices which act on food.

Q. Rennin acts on milk proteins and converts:

1. casein into paracasein
2. Caseinogens to paracasein
3. Caseinogen to casein
4. paracasein into caseinogen

Q. Which digestive organ mechanically and chemically transforms a food bolus into chyme?

1. oesophagus
2. small intestine
3. large intestine
4. stomach

Q. Gallstones in the gallbladder are produced by too much water absorption causing:

1. Precipitation of bile salts
2. Precipitation of bile pigments
3. Precipitation of fats
4. Precipitation of cholesterol

Q. The cells that directly and specifically secrete mucus are called _____ cells.

1. goblet
2. epithelial
3. endocrine
4. exocrine

Q. Which of the following is largest gland in adult man?

1. Thymus
2. Liver
3. Thyroid
4. Pancreas

Q. When parietal cells are stimulated, they secrete:

1. HCl and intrinsic factor
2. HCl and pepsinogen
3. $HC{O_3}^{-}$ and intrinsic factor
4. Mucus and pepsinogen

Q. Which one of the following pairs of the cells with their secretion is correctly matched?

1. Oxyntic cells-A secretion with pH between 2.0 and 3.0
2. Alpha cells of Islets of Langerhans-Secretion that decreases blood sugar level
3. Kupffer cells-A digestive enzyme that hydrolysis nucleic acids
4. Sebaceous glands-A digestive enzyme that hydrolysis nucleic acids

Q.

Correct the following statements

1.Carboxypeptidase is exopeptidase acting on N-terminal end of peptide chain.

2.Nucleotidase and nucleosidase enzymes are present in pancreatic juice

Q. Why do all the freshwater organisms have contractile vacuoles whereas the majority of marine organisms lack them?

Q. What are the functions of gastric glands present in the wall of the stomach?

1. Production of pepsin enzyme that digests proteins
2. Secretion of mucus for protection of inner lining of stomach
3. Secretion of HCl, which kills the bacteria and foreign harmful organisms in the food
4. All of the above

Q. Which digestive organ mechanically and chemically transforms a food bolus into chyme?

1. Oesophagus
2. Stomach
3. Small intestine
4. Large intestine

Q.

Give reason for the following
Certain useful products like glucose, salt, etc, are filtered but not excreted by ultrafiltration.

Q. When parietal cells are stimulated, they secrete:

1. HCl and intrinsic factor
2. HCl and pepsinogen
3. $HC{O_3}^{-}$ and intrinsic factor
4. Mucus and pepsinogen

Q. Short / Long answer type questions.
What types of cells are found in gastric glands and what do they secrete?

Q.

Monomers of proteins result by the activity of the following enzyme

1. Carboxypeptidase

2. Pepsinogen

3. Trypsin

4. Dipeptidase

Q. Read the following statements related to above diagram and select correct option :
i) Fatty acid and glycerol being insoluble and are absorbed in X.
ii) Electrolytes, Amino acids and monosaccharides are absorbed into Y.

Q.

Name the following
Knot-like mass of blood capillaries inside the Bowmans capsule

Q.

1. Morphine
2. Both (b) and (c)
3. Cellulose
4. Codeine

Q. Match column I with column II and select the correct option from the given codes.

	Column I		Column II
A.	Mucous neck cells	(i)	HCl, Intrinsic factor
B.	Peptic/Chief cells	(ii)	Mucus
C.	Parietal/Oxyntic cells	(iii)	Pepsinogen

1. A-(ii), B-(iii), C-(i)
2. A-(iii), B-(ii), C-(i)
3. A-(i), B(ii), C-(iii)
4. A-(ii), B-(i), C-(iii)

Q.

____ helps in the protection of mucosa from HCl

1. Pepsinogen

2. Mucus

3. Gastric lipase

4. Kupffer cells

Q. Curdling of milk in the stomach occurs by the action of

1. rennin
2. trypsin
3. erepsin
4. chymotrypsin

Q. Match column I with column II and select the correct option from the codes given below.
Column I Column II
A. Goblet cells (i) Antibacterial Agent
B. Lysozyme (ii) Mucus
C. Saliva (iii) HCl
D. Oxyntic cells (iv) Sublingual gland

1. A-(iii), B-(i), C-(iv), D-(ii)
2. A-(ii), B-(iii), C-(i), D-(iv)
3. A-(i), B-(iii), C-(iv), D-(ii)
4. A-(ii), B-(i), C-(iv), D-(iii)

Q. Crypts of Lieberkuhn are found in between the villi. They secrete

1. None of the above
2. Insulin
3. Succus entericus
4. Glucagon