Fact 1: Nephrons are the structural and functional units of the kidneys.

Fact 2: Each nephron has a glomerulus.

Given the two facts above, answer the question "things that have a what are the structural units of the kidneys?" with the following options: 
- organ
 - epidermal
 - critical organs
 - it needs them
 - bioaerosols
 - sensory neurons
 - glomerulus
 - layers of fat


 

       glomerulus  