Tag: busy at work - our internal organs

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Multiple choice biology food through digestive tract role of large intestine in digestion busy at work - our internal organs parts of the digestive system: structure and function

Large intestine  is about .......... in length.

  1. 1 metre

  2. 1.5 metre

  3. 2.5 metre

  4. 3.5 metre
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The small intestine in adults is a long and narrow tube about 7 meters (23 feet) long. The large intestine is so called because it is wide in diameter. However, it is shorter than the small intestine - only about 1.5 meters (5 feet) long. 

Therefore, the correct answer is option B.

Multiple choice biology food through digestive tract role of large intestine in digestion busy at work - our internal organs parts of the digestive system: structure and function

The digestive system processes food into usable and unusable materials. The usable materials are sent to the body's cells as food and unusable material goes into the

  1. Pancreas to await disposal

  2. Right ventricle to await disposal

  3. Large intestine to await disposal

  4. Small intestine to await disposal
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The process in which the complex and insoluble contents of food are converted into simpler and soluble substances, suitable for absorption and assimilation is called digestion. The food is digested by the digestive system with the help of digestive enzymes.  The usable materials are absorbed by the small intestine and the unusable food is passed on to the large intestine where the water is absorbed and moves to the anus for removal. Hence, the digestive system processes food into usable and unusable materials. The usable materials are sent to the body's cells as food and unusable material goes into the large intestine to await disposal.

So, the correct option is 'Large intestine to await disposal'.

Multiple choice biology food through digestive tract role of large intestine in digestion busy at work - our internal organs parts of the digestive system: structure and function

Large intestine has ______

  1. Large lumen

  2. Large length

  3. Large Diameter

  4. A and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Food is digested in three steps i.e mouth, stomach and small intestine. The undigested food is passed through large intestine. Large intestine larger diameter as compared to small intestine but is smaller in length.

Multiple choice biology food through digestive tract role of large intestine in digestion busy at work - our internal organs parts of the digestive system: structure and function

Salts and water is absorbed in ____ 

  1. Blood

  2. Large Intestine

  3. Both A and B

  4. Insufficient Data
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Food is digested in small intestine. No digestion takes place in large intestine. Salt and water is absorbed by the large intestine to maintain Osmo regulation.

Multiple choice biology food through digestive tract role of large intestine in digestion busy at work - our internal organs parts of the digestive system: structure and function

I. Assertion- Large intestine absorbs salts and water.
II. Reason-  Villi present is large intestine.

  1. I and II are true, II is not correct explanation to I

  2. I and II both are false

  3. I is false II is true

  4. I and II both are true, II is correct explanation to I
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Digestion ends in small intestine. Waste products are excreted from our body through large intestine. Excess water and salts are absorbed from intestine through muscular finger like projections called Villi.

Multiple choice biology food through digestive tract role of large intestine in digestion busy at work - our internal organs parts of the digestive system: structure and function

Water is largely absorbed in

  1. Stomach

  2. Oesophagus

  3. Small intestine

  4. Colon (large intestine)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
The colon is part of the large intestine, the last part of the digestive system. Its function is to absorb water and then expel the useless waste left from the body. The colon consists of four parts: descending colon, ascending colon, transverse colon and sigmoid colon. 
The large intestine also helps in absorption of vitamins made by bacteria that normally live in the large intestine. These are friendly bacteria called as commensal bacteria. 

Thus, the correct answer is option D.

Multiple choice biology food through digestive tract role of large intestine in digestion busy at work - our internal organs parts of the digestive system: structure and function

In which of the following, putrefying bacteria is present?

  1. Intestine

  2. Colon

  3. Stomach

  4. Liver
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Putrefaction is the decomposition of proteins caused due to bacterial or fungal decomposition of organic matter. The bacteria, yeast and other organisms in the fermented food allow colon to produce good bacteria. The fermented foods increase B vitamins such as riboflavin, thiamin and niacin. The activated form of folic acid is increased, which helps in cardiovascular and cancer risks. Choline is increased, which breaks down fat in the body and liver and helps with constipation. In addition, fermentation increases glutathione, an anti aging amino acid, and enzymes needed for digestion and detoxification.

Multiple choice biology food through digestive tract role of large intestine in digestion busy at work - our internal organs parts of the digestive system: structure and function

The main function of the colon (large intestine) of mammals
is to

  1. Temporarily store of excretory products

  2. Absorb water from undigested food

  3. Absorb digested food

  4. Digest cellulose

  5. Produce enzymes used in other parts of the alimentary

    canal
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The main function of the colon is absorption of much of the water from undigested food and leaving the solid material as faeces.

Multiple choice biology food through digestive tract role of large intestine in digestion busy at work - our internal organs parts of the digestive system: structure and function

Haemorrhoids are ______________.

  1. Small pouches of colon

  2. Enlarged rectal veins

  3. Outgrowths of anal canal

  4. Longitudinal folds of rectum
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Haemorrhoids, commonly known as piles, are swollen and inflamed veins in the rectum and anus that cause discomfort and bleeding.

Multiple choice biology food through digestive tract role of large intestine in digestion busy at work - our internal organs parts of the digestive system: structure and function

Which is the correct sequence of parts in human alimentary canal?

  1. Mouth---> stomach ---> small intestine ---> oesophagus ---> large intestine

  2. Mouth---> oesophagus ---> stomach---> large intestine ---> small intestine

  3. Mouth---> stomach ---> oesophagus ---> small intestine ---> large intestine

  4. Mouth---> oesophagus ---> stomach ---> small intestine ---> large intestine
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The digestive system starts with the mouth, followed by the food pipe or oesophagus that opens into the stomach. The stomach secretes acid and powerful enzymes that continue the process of breaking the food down into simpler substances. From there, food moves to the small intestine, which is made up of three segments, i.e., the duodenum, jejunum, and ileum.

Enzymes released by the pancreas and bile from the liver are poured in here. The duodenum is largely responsible for the continuing breakdown process, with the jejunum and ileum being mainly responsible for the absorption of nutrients into the bloodstream. The colon (large intestine) is a five to the seven-foot long muscular tube that connects the small intestine to the rectum. It is made up of the cecum, the ascending (right) colon, the transverse (across) colon, the descending (left) colon and the sigmoid colon, which connects to the rectum. The large intestine is a highly specialized organ that is responsible for processing waste so that defecation (excretion of waste) is easy and convenient through the anus.
So, the correct answer is option D.