What is the wall of Bowman's capsule in the nephron made of?

Which of the following epithelium is not present in the nephron?

The figure shows the human urinary system with structures labeled $A$ to $D$. Select the option which correctly identifies them and gives their characteristics and/or functions.

The renal columns of Bertin are extensions of the ...... into the renal medulla.

In a rabbit,the urinary bladder opens into:

Choose the incorrect sentence$(s)$.
$(I)$ Malpighian corpuscles,$PCT$ and $DCT$ of the nephron are situated in the medulla of the kidney.
$(II)$ The loop of Henle dips into the medulla.
$(III)$ In juxtamedullary nephrons,the loop of Henle is too short and extends very little into the medulla.
$(IV)$ Vasa recta is absent or highly reduced in cortical nephrons.