The primary or main excretory organ in humans is:

Mention the location,size,and weight of the kidney.

In the kidney of the rabbit,the $Loop$ of $Henle$ is the part of:

Arrange the following parts of the nephron in a sequential manner and select the correct option accordingly.
$I.$ Glomerulus
$II.$ Bowman's capsule
$III.$ Henle's loop
$IV.$ Proximal convoluted tubule $(PCT)$
$V.$ Collecting duct
$VI.$ Distal convoluted tubule $(DCT)$

In the kidney,the ureter,blood vessels,and nerves enter through the ..........

How many nephrons are present in each kidney?