alleryStart learning →About how many nephrons does each kidney contain?
AAbout 130,000
BAbout 13 million
CAbout 1.3 million
DAbout 130 million
Answer & Solution
Correct answer: C. About 1.3 million
1. Nephrons are the functional units that filter blood and modify the filtrate into urine.
2. Each kidney holds about 1.3 million of them.
3. Every one is fed by its own afferent arteriole branching off the cortical radiate arteries.
4. Counts in the hundreds of thousands or the hundreds of millions are off by an order of magnitude or more.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 25 "The Urinary System", section 25.3 Gross Anatomy of the Kidney_
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