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What function does the Zonule of Zinn (aka Zinn's zonule) serve in the human body?

Question #150563. Asked by psnz.
Last updated Jan 31 2024.
Originally posted Jan 31 2024 9:09 PM.

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BigTriviaDawg star
Answer has 2 votes
BigTriviaDawg star
7 year member
1007 replies avatar

Answer has 2 votes.
The Zonule of Zinn is NOT a Doctor Seuss character nor do I believe he named it. What it does is as cool as its name though! They are the ciliary muscles that hold the eye's lens in place and flatten it to allow the eye to focus on objects. In fact, your Zonule of Zinns are hard at work right now as you read this answer!
The Zonule of Zinn, or ciliary zonule, is the elaborate system of extracellular fibers that centers the lens in the eye. In humans, the fibers transmit forces that flatten the lens during the process of disaccommodation, thereby bringing distant objects into focus. Zonular fibers are composed almost entirely of 10-12 nm-wide microfibrils, of which polymerized fibrillin is the most abundant component.

link https://www.aao.org/eye-health/anatomy/zonules

link https://pubmed.ncbi.nlm.nih.gov/32980533/

Response last updated by BigTriviaDawg on Jan 31 2024.
Jan 31 2024, 9:13 PM
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