The main and overall function of the skull is to protect the brain and sensory organs and support facial structures. Individual bones within the structure of the skull take on other and more specific roles.Know More
There are 22 individual bones in the human skull or cranium. They can be loosely divided into two groups: the cranial, which is at the top of the head, and the facial bones, which is at the front of the skull.
Some aspects of the skull are not fully understood. For example, there are sinus cavities within the cranial bones whose purpose is not known, although it is thought that these serve to decrease the weight of the skull. Some bones act to support specific regions of the face and head. The temporal bones act to support the temples while the occipital bone at the rear of the cranium support the back of the head.
The sphenoid bone, which is at the side of the head, and the ethmoid bone, located between the eyes, make up the structure of the eye socket. The ethmoid bone also plays a role in the structure of the nose and protects the vital structures like the eyes and nasal passages behind it.
The mandilla and maxilla bones around the mouth hold the teeth and mouth in place and allow for movement of the jaw. The nasal conchae are small bones located at the nose, which serve to filter the air that is breathed into the nasal cavity.Learn more about Bones
Rutgers University explains that the axial skeleton consists of the skull, mandible, sternum, sacrum and ribs. These bones combine to form the axis of the entire skeleton, which is why they are collectively called the axial skeleton.Full Answer >
Injury during birth, head trauma, vitamin A toxicity, separated or malformed sutures, application of pressure, or rare congenital conditions can cause indentations in the skull, according to Healthline. When one of the skull's bones cracks, the depressed skull fracture sometimes dents inward, according to Drugs.com.Full Answer >
Flat bones in the human body include the ribs, sternum (breastbone), scapula (shoulder blade), pelvic girdle and many of the 29 bones that make up the skull. Flat bones act as protection for essential organs or as attachment points for major muscle groups.Full Answer >
Examples of fixed joints include the joints between the bones in the skull and the joint where the radius and ulna bones meet in the lower arm. Fixed joints, also known as fibrous joints, are places where two bones come together in the body but are unable to move. This type of joint is held together by fibrous connective tissue rather than ligaments and tendons.Full Answer >