Assertion: ureter's structure | /r/Synonym | nephron
Facets:
Source sentences:
text: Filtration in the kidneys happens as fluids and salts in the body are pushed through structures called nephrons.
text: Each kidney contains over a million tiny structures called nephrons, and they are responsible for forming urine.
text: Each kidney contains over a million tiny structures called nephrons, and they are responsible for forming urine.