Stomach

Q.

Describe the alimentary canal of man.

Q.

Maximum absorption of water occurs in

A. Caecum

B. Colon

C. Small intestine

D. Large intestine

Q. Explain the digestive system of Cockroach with the help of a labelled sketch.

Q. What is the pH value of 10M hcl?

Q.

What is the longest part of the human digestive system?

Q.

Name the organs that make up the alimentary canal.

Q.

Mention the function of HCl.

Q.

Stomach is located in upper left portion of the abdominal cavity and has three major parts. Name these three parts.

Q.

Oxyntic cells are located in

1. Islets of Langerhans

2. Gastric epithelium and secrete pepsin

3. Kidney and secrete rennin

4. Gastric epithelium and secrete $\mathrm{HCl}$

Q.

Is pancreatic juice acidic or alkaline?

Q.

Name the main organs of the human digestive system in the order they participate in the process of digestion.

Q.

The esophagus that opens into the stomach is called:

1. Glottis

2. Gullet

3. Pharynx

4. Larynx

Q. What is the role of HCl in our stomach?

Q.

Where does Digestion begin?

Q.

What does digestive system consist of?

Q. (a) Draw a labelled diagram of human alimentary canal.
(b) Explain the digestion of fat in our body. Where does this process take place?
(c) What is the role of saliva in the digestion of food?

Q.

What is the function of the pyloric sphincter muscle?

Q. With respect to life cycle of Plasmodium, fertilization and development take place in:

1. RBCs of human
2. Mosquito’s gut
3. Hepatocytes of human
4. Hepatic lobule of human
   

Q. Which of the following is not a part of the stomach?

1. fundus
2. cardiac
3. pylorus
4. jejunum

Q. Small intestine is divided into the following parts except

1. Ischium
2. Jejunum
3. Duodenum
4. Ileum

Q. Macrophages and leucocytes exhibit

1. Gliding movement
2. Flagellar movement
3. Amoeboid movement
4. Ciliary movement

Q.

Answer briefly:

(a) Why are villi present in the intestine and not in the stomach?

(b) How does pepsinogen change into its active form?

(c) What are the basic layers of the wall of alimentary canal?

(d) How does bile help in the digestion of fats?

Q.

List the organs of the digestive system.

Q.

Gastric digestion takes place efficiently in

1. Acidic medium

2. Alkaline medium

3. Neutral medium

4. Highly alkaline medium

Q.

Which of the following functions is not considered a function of bile juice?

1. Neutralising the acidic traces of food

2. Providing an alkaline medium for the intestinal proteases

3. Emulsifying fats

4. It contains a lipase

Q. Which of the following regulates the opening and closing of the stomach into duodenum?

1. Pyloric sphincter
2. Gastro-oesophageal sphincter
3. Sphincter of Oddi
4. Sphincter of Boyden

Q.

What is the nature of saliva produced in the mouth by salivary glands?

1. Weakly acidic

2. Strongly acidic

3. Alkaline

4. Neutral

Q. Which of the following digestive juices have the very low pH?

1. Saliva
2. Pancreatic juice
3. Bile
4. Gastric Juice

Q. Which is the only tissue with contractile properties?

1. muscle
2. nervous
3. connective
4. epithelial

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

	Column I (Sphincter)		Column II (Location)
A.	Sphincter ani Internus	(i)	Opening of hepatopancreatic ampulla into duodenum
B.	Cardiac sphincter	(ii)	Between duodenum and posterior stomach
C.	Sphincter of Oddi	(iii)	Guarding the terminal part of alimentary canal
D.	Ileocaecal sphincter	(iv)	Between oesophagus and anterior stomach
E.	Pyloric sphincter	(v)	Between small intestine and large intestine

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