Parietal tubercle

The tubercle of the parietal bone of the skull is an outgrowth of the parietal bone located at the junction of the sagittal plane and the roof of the skull. The tuberous shape has five outlets oriented along the sagittal axis for the paired transverse temporal arteries and the sigmoid foramen, through which cerebrospinal fluid from the cranial cavity can be released into the spinal cord, where it mixes with the cerebrospinal fluid secreted by the spinal vesicles. Often referred to by other names such as the occipital cortex (English: mastoid tubercle; Latin: tuberositas parietae), or sometimes as the occipital protuberance.

The tubercle of the parietal bone contains neither sympathetic ganglia nor motor nerve fibers. It lies superficially below the temporal line (connecting the edge of the mastoid process and the middle ear), although its inner surface is in contact with the posterior edge of the almond shape. Base