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

The amount of blood filtered by both kidneys per minute is equal to what fraction of the blood pumped out by each ventricle of the heart in one minute?

Analogy type question:
$(1)$ Inner concave notch of kidney : Hilum :: Broad funnel-shaped part of renal pelvis : ............. .
$(2)$ Renal tubule begins with a double-walled cup-like structure called Bowman's capsule :: Bowman's capsule along with glomerulus : ............. .

The afferent and efferent arterioles are . . . . . . .

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.

What is the difference between an afferent arteriole and an efferent arteriole?