koljuõõnsus

Koljuõõnsus refers to the cranial cavity, the space within the skull that encloses and protects the brain. It is formed by the bones of the cranium, which include the frontal, parietal, temporal, occipital, sphenoid, and ethmoid bones. These bones are fused together in adults, forming a rigid, protective shell. The cranial cavity is not a uniform space; it contains several important structures in addition to the brain itself, such as the meninges, cerebrospinal fluid, and blood vessels. The meninges are three protective membranes that surround the brain and spinal cord, and cerebrospinal fluid acts as a cushion, absorbing shock and providing nutrients. The size and shape of the cranial cavity vary between individuals and are influenced by factors such as genetics and age. Any significant alterations to the volume or integrity of the cranial cavity can have serious implications for brain function and overall health. For instance, trauma can lead to increased intracranial pressure, which can damage brain tissue. Conversely, the cranial cavity develops and grows throughout childhood and adolescence to accommodate the developing brain.