Fill in the blanks: The two parietal bones are united at the_______suture; they meet the frontal bone at the_____ suture, the temporal bones at the______ sutures, and the occipital bone at the_____suture.

Verified step by step guidance

1. Identify the location of the parietal bones in the skull. They are located on the sides and roof of the cranial cavity.
2. Understand that sutures are fibrous joints that connect the bones of the skull. They are immovable and allow for growth during development.
3. The suture that unites the two parietal bones is called the sagittal suture.
4. The suture where the parietal bones meet the frontal bone is known as the coronal suture.
5. The suture where the parietal bones meet the temporal bones is called the squamous suture, and the suture where they meet the occipital bone is the lambdoid suture.

Key Concepts

Parietal Bones

The parietal bones are two large, flat bones located on the sides and roof of the skull. They form a significant part of the cranium and are involved in protecting the brain. Understanding their location and connections to other skull bones is essential for identifying the sutures that unite them.

Cranial Sutures

Cranial sutures are fibrous joints that connect the bones of the skull. They allow for slight movement during birth and growth, and they become more rigid with age. Key sutures include the sagittal suture (between the parietal bones), coronal suture (between the frontal and parietal bones), squamous sutures (between the temporal and parietal bones), and lambdoid suture (between the occipital and parietal bones).

Frontal and Occipital Bones

The frontal bone forms the forehead and the upper part of the eye sockets, while the occipital bone is located at the back and base of the skull. Both bones articulate with the parietal bones at specific sutures, which are crucial for understanding the overall structure of the skull and its protective function for the brain.