Irregular bone
Irregular Bone
Irregular bones are bones in the human body that do not fall into any other category due to their non-uniform shape.
Pronunciation
Irregular bone is pronounced as /ɪˈrɛɡjʊlər boʊn/.
Etymology
The term "irregular bone" comes from the Latin word "irregularis", meaning not regular, and the Old English word "bān", meaning bone.
Definition
Irregular bones are one of the five types of bones in the human body. Unlike the long bones, short bones, flat bones, and sesamoid bones, irregular bones cannot be classified into any of these categories due to their complex shapes.
Examples
Examples of irregular bones include the vertebrae, which make up the spinal column, the hip bones, and several bones in the skull such as the ethmoid bone and sphenoid bone.
Function
Irregular bones primarily provide protection to the body's vital organs. For instance, the vertebrae protect the spinal cord, while the hip bones protect the pelvic organs. Additionally, irregular bones also provide attachment points for muscles and act as levers for movement.
Related Terms
- Bone: The rigid organ that constitutes part of the vertebrate skeleton.
- Vertebrae: The individual bones that stack to make the spine.
- Hip Bones: The large, flat bones that form the structure of the hips.
- Skull: The bony structure that forms the head in vertebrates.
- Spinal Column: The flexible column extending from neck to tail, made up of a series of bones, the vertebrae.
External links
- Medical encyclopedia article on Irregular bone
- Wikipedia's article - Irregular bone
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