The small intestine is divided into which three parts?
A) Duodenum, Jejunum, Ileum
B) Stomach, Duodenum, Colon
C) Jejunum, Ileum, Cecum
D) Ileum, Cecum, Rectum
The correct answer is A) Duodenum, Jejunum, Ileum.
The small intestine, also known as the small bowel, is a long, thin tube-like structure that absorbs nutrients from food into the bloodstream. It is divided into three distinct parts:
1. Duodenum (first 25 cm/10 in): Receives bile and pancreatic juice from the liver and pancreas to facilitate digestion.
2. Jejunum (middle portion): Absorbs most of the nutrients from food into the bloodstream.
3. Ileum (final portion): Absorbs remaining nutrients, especially vitamins and minerals, and prepares the waste for the large intestine.