NEET Biology question
Not in NEET syllabus
Match column I with column II and select the correct option from the given codes. Column I (Sphincter): A. Sphincter ani internus; B. Cardiac sphincter; C. Sphincter of Oddi; D. Ileocaecal sphincter; E. Pyloric sphincter. Column II (Location): (i) Opening of hepatopancreatic ampulla into duodenum; (ii) Between duodenum and posterior stomach; (iii) Guarding the terminal part of alimentary canal; (iv) Between oesophagus and anterior stomach; (v) Between small intestine and large intestine.
Solution
The sphincter ani internus (internal anal sphincter) guards the terminal part of the alimentary canal, the anus (A-iii). The cardiac sphincter lies between the oesophagus and the anterior (cardiac) end of the stomach (B-iv). The sphincter of Oddi guards the opening of the
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