Occipital Protrusion External

Occipital Protrusion External: Anatomy and Functions

The external occipital protuberance, also known as the protuberantia occipitalis externa, is a protuberance on the back of the skull located above the foramen magnum. This protrusion is part of a bone called the occipital bone, which forms the back of the skull.

The external occipital protuberance has several alternative names, including pna, bna, and jna, as well as the synonym "external occipital protuberance." All of these terms refer to the same anatomical structure.

In most people, the external occipital protrusion is not very noticeable and is small in size. However, in some people it can be more pronounced, which often depends on genetic factors and individual characteristics.

It is important to note that the external occipital protrusion does not have significant functions in the human body. It is simply a result of the formation of the skull bone and is not involved in metabolism or other processes in the body.

Some people may experience discomfort or pain in the area of ​​the external occipital protrusion when the head is held motionless for a long time. In such cases, it is recommended to periodically change the position of the head to relieve pressure on this area.

In conclusion, the external occipital protuberance is an anatomical structure that is part of the occipital bone of the skull. It has no significant function in the human body and may be more pronounced in some people. If you experience discomfort or pain in the area of ​​the external occipital protrusion, consult a doctor for advice and diagnosis.

The nuchal protuberance externa is a protrusion on the outside of the back of the head that is often found in humans. It has many names including: frontal protuberance, occipital protuberance, external lemniscus, etc. This term is used in medicine to refer to a condition where the occipital bones are displaced to the side or forward of the skull (congenital or acquired condition). This leads to a decrease in the lateral occipital space and disruption of cerebral circulation.

**Causes:**

A nuchal protrusion can occur for several reasons, one of which is the result of a head injury. For example, it can appear when the back of the head is bruised, the head is turned to one side, or the size of this part of the skull increases. There are hereditary causes for the occurrence of a nuchal protrusion, for example, if one of the parents suffers from a similar disease. In addition, the nuchal protrusion is often caused by a deterioration in fat metabolism in obesity. Age-related changes can also lead to deformation of the back of the head.

**Symptoms and consequences:** External symptoms are protrusion of part of the hair beyond the boundaries of the back of the head, as well as uneven protruding skin. Some people may experience discomfort when wearing clothes with low collars or underarms.

Even if the nuchal protrusion does not cause pain, treatment is necessary as it can lead to various health problems and complications.