
Chin - Wikipedia
The chin is the forward pointed part of the anterior mandible (mental region) below the lower lip. A fully developed human skull has a chin of between 0.7 cm and 1.1 cm.
What Is a Chin and Why Do Humans Have Them? - Biology Insights
Aug 24, 2025 · The chin is the distinct, forward-projecting part of the human face located at the bottom of the lower jaw. It is a defining feature of modern humans, setting us apart from other primates and …
What Is a Chin? Its Anatomy, Evolution, and Variations
Oct 23, 2025 · The chin is a familiar feature of the human face, serving as the defining point of the lower jaw. This bony prominence is a characteristic of human anatomy that sets Homo sapiens apart from …
CHIN Definition & Meaning - Merriam-Webster
May 20, 2026 · The meaning of CHIN is the lower portion of the face lying below the lower lip and including the prominence of the lower jaw. How to use chin in a sentence.
Chin - Anatomy, Function, Structure, Diagram, Significance
Dec 31, 2024 · The chin provides structural support to the lower face and serves as an attachment site for muscles involved in facial expressions, speech, and chewing. Its shape and size contribute …
Chin – meaning, definition, etymology, examples and more — Self ...
Aug 4, 2025 · Delve into the comprehensive meaning and definition of "chin." Uncover its fascinating etymology, trace its historical usage, and explore various examples and common idioms. Your …
The Chin Isn’t a Mystery — It’s a Midline Machine
Aug 7, 2025 · The chin acts as a rotational counterbalance to the skull, helping the cervical spine orient and stabilize the head. It’s the anterior anchor of the body’s midline — influencing everything from …
The chin is an evolutionary puzzle. Researchers may have finally solved it
Apr 1, 2026 · To dig into the murky origins of the human chin, we spoke to one of the study’s co-authors, Lauren Schroeder, a paleoanthropologist at the University of Toronto Mississauga.
Why Do Humans Have Chins? They Might Be an Evolutionary Accident, …
Feb 18, 2026 · “The chin evolved largely by accident and not through direct selection, but as an evolutionary byproduct resulting from direct selection on other parts of the skull,” says study co …
Chin | anatomy | Britannica
The projecting chin, at the lower part of the body in the midline, is said to be a distinctive characteristic of the human skull. On either side of the chin is the mental foramen, an opening for the mental branch …