Large Intestine

Q.

What is Digestion, absorption, and assimilation?

Q.

What are the 3 phases of gastric secretion?

Q.

What is succus entericus?

Q.

Which of the organs perform the following functions in humans ?
(i) Absorption of food
(ii) Absorption of water

Q.

In which part of the digestive system is water absorbed ?

Q.

The partially digested food coming from the stomach of a person enters a long and narrow organ A in his body. The organ A receives the secretions of two glands: liver and pancreas. The liver secretes a greenish-yellow liquid B which is normally stored in the organ C. Pancreas secretes pancreatic juice which contains three digestive enzymes D, E and F. The intestinal juice completes the process of digestion of food. The inner wall of organ A has millions of tiny finger-like projections G which help in the rapid absorption of digested food into the bloodstream. The undigested part of food then passes into wider tube H which absorbs most of the water from undigested food. The last part of tube H called I stores this undigested food (or waste) for some time. The undigested food is then passed out through opening J as faeces in the process known as K.
(a) Name the organ A.
(b) Name (I) liquid B, and (ii) organ C.
(c) What are the digestive enzymes D, E and F?
(d) Name the projections G present on the inner wall of organ A. (e) Name (i) tube H (ii) part I (iii) opening J, and (iv) process K

Q. Which one of the following is absorbed in the large intestine?

A. Water
B. Fatty acids
C. Amino acids
D. Glucose

Q. The undigested food passed out through opening J as faeces in the process known as K.
Identify both J and K

A. Colon and Egestion
B. Anus and Egestion
C. Rectum and Egestion
D. Anus and Assimilation

Q. (b) Describe one way in which the small intestine is adapted for the absorption of digested Food.

Q. From which part of the body, undigested food is egested in Amoeba ?

Q. What substances enter into the food vacuole in Amoeba to break down the food ?

Q.

What are the 2 types of digestion?

Q. (c) What is the special name of the contraction and expansion movement which pushes the food further in our digestive tract (or alimentary canal) ?

Q.

Q. Which one of the following is absorbed in the large intestine?

A. Water
B. Fatty acids
C. Amino acids
D. Glucose

Q.

What is digestion and Its types?

Q.

What is meant by defecation ?

Q.

The Vermiform appendix is called abdominal tonsil.

1. True
2. False

Q.

What is the part of the food that is not digested?

Q.

The process of oxidation of food is necessary to

1. Digest food

2. Release energy

3. Ingest food

4. Absorb digested nutrients

Q.

What is the name of the opening in the human body through which undigested food is thrown out ?

Q.

What would happen if the small intestine stopped working?

Q.

1. Mention the site of complete digestion of carbohydrate, proteins and fats in humans.

Q. Which of the organs perform the following functions in humans?
(i) Absorption of food

Q.

Structures present in the small intestine that increase the surface area for absorption are termed :

1. cillia

2. villi

3. linings

4. hair

Q. Which of the following is not the function of large intestine?

1. Absorption of water
2. Nutrient absorption
3. Secretion of mucus to lubricate faeces
4. Temporary storage faeces in rectum

Q. Name an energy rich carbohydrate stored in large quantities in liver and muscle cells.

Q. The correct order of steps occurring in nutrition in animals is :

1. Ingestion → Absorption → Digestion → Assimilation → Egestion
2. Ingestion → Assimilation → Digestion → Absorption → Egestion
3. Ingestion → Digestion → Assimilation → Absorption → Egestion
4. Ingestion → Digestion → Absorption → Assimilation → Egestion

Q. The undigested food passed out through opening J as faeces in the process known as K.

Identify both J and K

A. Colon and Egestion
B. Anus and Egestion
C. Rectum and Egestion
D. Anus and Assimilation

Q. What is the other name of a food pipe ?