NEET UG 2021 · Zoology · Question 178
NEET 2021 Zoology, question 178
Question 178 of the NEET 2021 paper (code O1) is a Zoology question from Digestion and Absorption. Its idea, Sphincter of Oddi Function, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 4.
Updated 2026-10-08
Q178 · Zoology
Sphincter of oddi is present at :
- 1Gastro-oesophageal junction
- 2Junction of jejunum and duodenum
- 3Ileo-caecal junction
- 4Junction of hepato-pancreatic duct and duodenumOfficial answer
Official answer: option 4 · NTA final answer key
Same idea
The only question on Sphincter of Oddi Function
No other NEET paper from 2017–2026 tested this exact idea.
Sphincter of Oddi Function: every question and how it was framed
The chapter
Digestion and Absorption in ten years of NEET
15 questions from 2017–2026, asked in 7 of 10 papers, about 1.4 a paper. Digestive Enzymes alone had 13.