NEET (NTA)-National Eligibility cum Entrance Test (Medical) Biology Human Physiology-Digestion and Absorption Revision (Page 5 of 23)

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Parts of GIT – Pharynx and Esophagus

Pharynx; is behind the soft palate and is divided into;

  1. Nasopharynx; is nasal part of pharynx which is most superior portion of the pharynx. It lies next to the internal nares. It is connected to middle ear on both sides by Eustachian tube (auditory tube). Food never enters the nasopharynx; it is a passage for respiratory tract only.

  2. Oropharynx; is continuous with posterior end of oral cavity. It means the nasopharynx and oral cavity open into the oropharynx which is a common

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Part of GIT - Stomach

Stomach;

  • is a hollow muscular bag which resembles the J word of English alphabet. It lies in the abdomen. It is widest part of alimentary canal. Its capacity is about 1500 ml but can increase up to 3000 ml or more.
  • At its upper end it is connected to esophagus, this is called Cardia or cardiac region (close to heart). The cardiac sphincter lies in the opening of oesophagus and stomach. It is a functional sphincter and can not be seen on dissection. The dome shaped upper part of the

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