Quadrate
Quadrate
The Quadrate (pronounced: /ˈkwɒdreɪt/) is a term used in anatomy to refer to a bone found in the skulls of many reptiles, birds, and some mammals. The quadrate bone is involved in the articulation of the lower jaw.
Etymology
The term "quadrate" is derived from the Latin word "quadratus", meaning "square". This is likely in reference to the typically square shape of the bone in cross-section.
Anatomy
The quadrate bone is located in the skull, typically at the back of the jaw. It forms a joint with the lower jaw, allowing for movement. In mammals, the quadrate bone has become the incus, one of the bones in the middle ear.
Related Terms
- Articulation: The process of joint movement, which the quadrate bone is involved in.
- Incus: The bone in the middle ear of mammals that the quadrate bone has evolved into.
- Skull: The structure that houses the brain, to which the quadrate bone is attached.
- Reptiles: A group of animals that typically possess a quadrate bone.
- Birds: Another group of animals that typically possess a quadrate bone.
- Mammals: A group of animals in which the quadrate bone has evolved into the incus.
External links
- Medical encyclopedia article on Quadrate
- Wikipedia's article - Quadrate
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