Which of the following statements about human kidneys are incorrect? I. The cortex extends in between the medullary pyramids as renal columns called Columns of Bertini. II. Inside the kidney, there are two zones, an outer cortex and an inner medulla. III. Towards the centre of the inner convex surface of the kidney is a notch called hilum through which ureter, blood vessels and nerves enter. IV. Human kidneys extend from the 12 th thoracic vertebra to the 5 th lumbar vertebra.

Question

Which of the following statements about human kidneys are incorrect? I. The cortex extends in between the medullary pyramids as renal columns called Columns of Bertini. II. Inside the kidney, there are two zones, an outer cortex and an inner medulla. III. Towards the centre of the inner convex surface of the kidney is a notch called hilum through which ureter, blood vessels and nerves enter. IV. Human kidneys extend from the 12 th thoracic vertebra to the 5 th lumbar vertebra., I and III, II and IV, III and IV, I and II

MARKS App · Accepted Answer

Human kidneys have an inner concave center which has a notch called hilum. The blood vessels and nerves enter the kidney through this notch. Human kidneys extend from the 12 th thoracic vertebra to the 3 rd lumbar vertebra. Human kidneys are metanephric i.e.they develop from the embryonic precursor 'metanephros'. Human kidneys are retroperitoneal i.e. their situated behind the peritoneum.

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