Which one of the following is the correct sequence in the order of decreasing length of the structural parts given below of small intestine in the human body?

The correct answer is C. Jejunum-Ileum-Duodenum.

The small intestine is a long, coiled tube that is located in the upper abdomen. It is about 20 feet long in adults and is responsible for absorbing nutrients from food. The small intestine is divided into three parts: the duodenum, the jejunum, and the ileum.

The duodenum is the shortest part of the small intestine. It is about 10 inches long and is located in the upper right abdomen. The duodenum is connected to the stomach and the jejunum. The duodenum is responsible for digesting food and absorbing nutrients.

The jejunum is the middle part of the small intestine. It is about 8 feet long and is located in the upper and middle abdomen. The jejunum is connected to the duodenum and the ileum. The jejunum is responsible for absorbing nutrients.

The ileum is the longest part of the small intestine. It is about 12 feet long and is located in the lower abdomen. The ileum is connected to the jejunum and the large intestine. The ileum is responsible for absorbing nutrients and bile salts.

The correct sequence in the order of decreasing length of the structural parts given below of small intestine in the human body is:

1. Jejunum
2. Ileum
3. Duodenum