Aristotle's Lantern

Aristotle's Lantern is the complex jaw apparatus found in regular sea urchins, where five calcareous jaws and associated muscles enable feeding and make it a notable model for biological mechanics. Each jaw operates with coordinated muscles, ossicles, and continuously growing teeth that project through the mouth to scrape or bite food from surfaces. In bioengineering, studying this system reveals how lightweight mineral structures achieve controlled movement, force transmission, and self-renewing function. These principles can inform the design of compact gripping devices, abrasive tools, and other biomimetic systems that combine strength, precision, and durability.

Aristotle's Lantern - Related Videos

Research

JoVE Journal - Bioengineering

A Protocol for Bioinspired Design: A Ground Sampler Based on Sea Urchin Jaws

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Cited by 17 •

2016

A protocol for bioinspired design is described for a sampling device based on the jaws of a sea urchin. The bioinspiration process includes observing the sea urchins, characterizing the mouthpiece, 3D printing of the teeth and their assembly, and bioexploring the tooth structure.

Education

JoVE Lab Manual - Biology

Evolutionary Relationships - Concepts

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2019

Humans have been attempting to properly classify living things since Aristotle made the first attempt during the 4th century BC. Aristotle’s system was improved upon during the Renaissance and then, subsequently, by Carolus Linnaeus in the mid 1700’s. These more formal classification and organization systems grouped species by their physical similarity to one another. For example, all vertebrates have a backbone, but invertebrates do not. Traits like the backbone are called synapomorphies,...

Research

JoVE Journal - Behavior
Free Sample

Control of Eating Behavior Using a Novel Feedback System

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Cited by 20 •

2018

Subjects eat food from a plate placed on a scale connected to a computer that records the weight loss of the plate during the meal. Feedback on the computer screen allows the subject to adapt her/his eating behavior to reference curves thus normalizing body weight.

Targeting the Rat's Small Bowel: Long-Term Infusion into the Superior Mesenteric Artery

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Cited by 2 •

2021

Access for long-term infusion in the superior mesenteric artery (SMA) of rats is a surgical procedure that consists of cannulation of a proximal branch of the SMA. The cannula exits from the abdominal wound and is tunneled through the subcutaneous space back to the interscapular fold.

Detection and Isolation of Circulating Melanoma Cells using Photoacoustic Flowmetry

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Cited by 14 •

2011

We have developed a flow cytometer using laser induced ultrasound to detect circulating melanoma cells as an early indicator of metastatic disease.

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