Histology of Duodenum

Q.

Gastric juice contains

1. Pepsin, lipase and rennin

2. Trypsin, lipase and rennin

3. Trypsin, pepsin and lipase

4. Trypsin, pepsin and renin

Q.

What are the final products of digestion?

Q. In the wall of alimentary canal, what is the actual sequence from outer to inner:

1. Serosa, longitudinal muscle, mucosa, circular muscles, submucosa
2. Mucosa, serosa, circular muscles, longitudinal muscle, submucosa
3. Serosa, longitudinal muscle, circular muscle, submucosa, mucosa
4. Serosa, submucosa, longitudinal muscle, circular muscles, mucosa

Q.

Why are villi present in the intestine and not in the stomach?

Q.

Draw a neat and labeled diagram of the human digestive system.

Q.

How long does it take for water to pass through the body?

Q.

What is meant by an integumentary system?

Q.

Define alimentary canal.

Q.

Match the following structures with their respective location in organs:

Column 1	Column 2
Crypts of Lieberkuhn	Pancreas
Glisson’s Capsule	Duodenum
Islets of Langerhans	Small intestine
Brunner’s Glands	Liver

Q.

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

Q.

Intestine absorbs the digested food materials. What type of epithelial cells are responsible for that?

1. Stratified squamous epithelium

2. Columnar epithelium

3. Spindle fibres

4. Cuboidal epithelium

Q. What are Villi ? Mention their functions.

Q.

Give another term used for salivary amylase.

Q.

Where are enzymes found?

Q. Which of the following is not a retroperitoneal organ?

1. Ureters and urinary bladder
2. Esophagus
3. Stomach
4. Kidneys

Q. If fat acts as respiratory substrates then they would need to be broken down into fatty acids and glycerol. If fatty acids were to be respired they would first be degraded to $\dots a\dots$ and enter the pathway. Glycerol would enter the pathway after being converted to $\dots b\dots$

Q.

Name the enzymes that help in digestion of protein.

Q. The intestinal villi are more numerous and larger in posterior part of small intestine because:

1. blood supply is poorer in anterior part
2. Blood supply is poorer in posterior part
3. there is more digested food in posterior part
4. Digestion is faster in posterior part

Q. The digested food is absorbed by the .......... of the small intestine.

1. Villi
2. Rugae
3. Taenia coli
4. None of the above

Q. Which of the following secretes Gastric Inhibitory Peptide (GIP)?

1. Oesophagus
2. Ileum
3. Duodenum
4. Stomach

Q. Which of the following statements about the digestion of starch is correct?

1. The Gibbs free energy for the digestion of starch by -amylase is positive
2. The digestion of starch by -amylase is an endergonic process
3. The digestion of starch by -amylase is an exergonic process
4. Starch digestion releases glucose which is actively transported from the epithelial cells into the blood

Q. In the human digestive system, digestion occurs in
(a) Buccual cavity
(b) Stomach
(c) Small intestine
(d) Large intestine

1. (a) only
2. (b), (c) and (d) only
3. (a), (b) and (c) only
4. (a) and (b) only

Q. If for some reason our goblet cells are non-functional, this will adversely affect

1. Production of somatostatin
2. Secretion of sebum from the sebaceous glands
3. Maturation of sperms
4. Smooth movement of food downwards the intestine

Q.

Liver secretes — into the small intestine.

Q. Draw the diagram of villi in small intestine and label its parts.

Q. Non keratinised stratified epithelium is not found in

1. vagina
2. cervix
3. oral cavity
4. skin

Q.

What makes us hungry?

Q. Write the role of Villi in human digestive system.

Q. The epithelium lining the inner surface of the digestive tract is formed from

1. mesoderm
2. endoderm
3. all of the above
4. ectoderm

Q.

Liver secretes___into small intestine.