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Digestion and Absorption — Bio Zoology STD 11 — Question

Tamilnadu BoardEnglish MediumSTD 11Bio ZoologyDigestion and Absorption3 Marks
Question
Give short notes on the pharynx.
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Answer

  • The oral cavity leads into a common passage for food and air is called the pharynx.
  • The oesophagus and the trachea open to the pharynx.
  • Food passes into the oesophagus through a wide opening called a gullet at the back of the pharynx.
  • A cartilaginous flap called epiglottis prevents the entry of food into the glottis during swallowing.
  • Two masses of lymphoid tissue called tonsils are also located at the sides of the pharynx.

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