Skull what type of bone

Some of the sutures in the skull take a few months-to-years after birth to completely form. The brain is encased in the cranium of the skull. The bones that make up the cranium are called the cranial bones. The remainder of the bones in the skull are the facial bones. Figure 6.

In Figure 6. Mandible removed. The sphenoid bone, from the outside, appears to contribute to only a small portion of the cranium, but when the parietal bones are removed and the interior of the cranial cavity where the brain would be housed is viewed, you can see the butterfly-like shape of the sphenoid bone makes a large contribution to the floor of the cranial cavity.

The ethmoid bone, which from the outside is only visible in the eye sockets and as the upper conchae internal bumps of the nasal cavity, also contributes to the floor of the cranial cavity. The contributions of these two bones to the floor of the cranial cavity are shown in Figure 6. These small, round bones are commonly found in the tendons of the hands, knees, and feet. Sesamoid bones function to protect tendons from stress and wear. The patella, commonly referred to as the kneecap, is an example of a sesamoid bone.

See more from our free eBook library. A description of types of bones from the edition of Gray's Anatomy of the Human Body. Human Anatomy Atlas offers thousands of models to help understand and communicate how the human body looks and works. X-rays of the hand , hip , knee , and ankle.

Stony Brook University School of Medicine. The Body Online. An Overview of the Skeletal System. Appendicular Skeleton. Joints and Ligaments. Skeletal System Pathologies. When you select "Subscribe" you will start receiving our email newsletter.

Use the links at the bottom of any email to manage the type of emails you receive or to unsubscribe. Medically reviewed by Seunggu Han, M. Anatomy and function Diagram of cranial bones Cranial bone conditions Health tips What are cranial bones? There are several types of bones within your body, including: long bones short bones flat bones irregular bones sesamoid bones There are two types in your cranium: Flat bones.

As their name suggests, these bones are thin and flat, though some of them have a slight curve. Irregular bones. Anatomy and function. Diagram of cranial bones. Cranial bone conditions. Tips for healthy cranial bones. Read this next. The 12 Cranial Nerves. Medically reviewed by Deborah Weatherspoon, Ph. Cranial CT Scan. What Is a Craniectomy?