NEET2026BiologyChapterActual
Read the following statements regarding the anatomy of a frog and select the incorrect statement.
Options
- AThe hindbrain consists of the cerebellum and medulla oblongata, where the latter passes out through the forame
- BA triangular structure called the sinus venosus joins the left atrium and receives blood through the major vei
- CVasa efferentia, which are 10-12 in number, enter the kidneys on their side and open into the Bidder's canal.
- DSpecial venous connections exist between the liver and intestine, as well as between the kidney and lower part
Correct answer
B. A triangular structure called the sinus venosus joins the left atrium and receives blood through the major vei
Step-by-step solution
The sinus venosus is a triangular structure that joins the right atrium, not the left atrium. It receives deoxygenated blood from the major veins called the vena cava. The hindbrain consists of the cerebellum and medulla oblongata, and the medulla oblongata passes out through the foramen magnum to continue into the spinal cord. Vasa efferentia are 10-12 in number, arising from the testes, entering the kidneys on their side, and opening into Bidder's canal. Special venous connections exist in frogs, namely the hepat