Which of the following is correct?
Afferent arteriole is narrower than the efferent arteriole
Efferent venule is narrower than vein
Efferent arteriole is narrower than afferent arteriole
Both afferent and efferent arteriole are of same diameter
The glomeruli are confined to the
The basic functional unit of the human kidney is
Loop of Henle is concerned with
Other function performed by kidney apart from excretion is
Identify $A$ to $D$ in the given structure and choose the correct option accordingly