Small Intestine and Its Histology -
- The stomach opens into the small intestine through the pyloric orifice.
- The small intestine is the longest and thinnest part of the alimentary canal.
- The average length of the small intestine in an adult human male is 6.9 m and in the adult female 7.1 m.
- Hence, it is highly coiled and occupies the lower part of the abdominal cavity.
- The small intestine is approximately 2.5–3 cm in diameter, and is divided into three sections:
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The stomach opens into the small intestine through the pyloric orifice. Hence, the correct answer is option d.
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