Tearful Tenderloin

The lacrimal notch, also known as incisura lacrimalis or abbreviated as PNA/BNA/JNA, is an important anatomical structure of the human body. This notch is located at the edge of the nasal bone and plays an important role in the drainage of tears.

Tears are produced by the lacrimal glands, which are located in the upper outer part of the eye socket. They leave the eye through the lacrimal puncta, which are located on the inside of the upper and lower eyelids. The tears then pass through the lacrimal ducts and are collected in the lacrimal sac. From there they exit through the lacrimal opening, which is located in the lacrimal notch, and enter the nasopharynx.

The lacrimal notch has a special shape that helps it perform its function. Its conical shape allows tears to flow down freely without clogging or clogging. In addition, the lacrimal notch is in close connection with the nasopharynx, which ensures rapid and effective removal of tears from the eye.

If tears cannot flow freely from the eye through the lacrimal notch, it can lead to various problems with vision and eye health. Some of these problems may include tear gland disease, infections, and allergic reactions.

In conclusion, the lacrimal notch is an important part of the anatomy of the eye and plays an important role in the drainage of tears. Due to its shape and location, the lacrimal notch ensures quick and effective removal of tears from the eye, which is necessary for eye health and good vision.