What is 22 Bones?
The phrase "22 bones" most commonly refers to the bones of the human skull. The skull is comprised of 22 individual bones, which are largely immobile and fused together. This total includes both the cranial bones (protecting the brain) and the facial bones.
The 22 bones are categorized into:
- 8 Cranial Bones: These form the cranium, which encases and protects the brain. Examples include the frontal bone, parietal bones (2), temporal bones (2), occipital bone, sphenoid bone, and ethmoid bone. These bones are critical for brain protection and support.
- 14 Facial Bones: These bones form the structure of the face. This group includes bones like the maxillae (2), zygomatic bones (2), nasal bones (2), lacrimal bones (2), palatine bones (2), inferior nasal conchae (2), vomer, and mandible (which is the only movable bone in the skull). These contribute to facial features, support for soft tissues, and the passageways for air and food.
The mandible, or lower jaw, is notable as the only movable bone in this collection of 22.
Several sources confirm this count:
- Byjus.com states that the skull is made up of 22 bones, along with cartilage and ligaments.
- Jacksonville Orthopaedic Institute clearly states there are 8 cranial bones and 14 facial bones, totaling 22 bones of the skull.
- Lumen Learning specifies that the adult skull consists of 22 individual bones, with the mandible being the only movable one.
Note: While "22 bones" might refer to other things (such as a restaurant, a TV show episode, or a date), the most common and relevant interpretation in a biological or anatomical context is the human skull.
