tear opening This anatomical structure, called the lacrimal papilla, is a channel in the tissue protrusion of the eye and is connected to a channel called the tear duct. “Lacrimal”, meaning “related to tears”, does indeed have a meaning-related function.

Usually for the purpose of “shedding tears” although it seems The structure that performs this function is actually the “tear fountain” and its location is in the inner part of the eye, which is closer to the nose.

The job of these holes is to ensure that the secreted tears are reabsorbed.

These ducts open into a structure called the lacrimal sac. The walls of these two buildings made of elastic fabric It is formed and surrounded by fibers that make up the lacrimal segments of the orbicularis muscles, also known as the Horner muscle.

The length of the first part of the channels is 2 millimeters. Then comes a slightly wider part called the ampulla, this part is located at the bottom of the tear ducts.

The channels then continue horizontally for another 8 millimeters and the channels of the lower and upper eyelid merge. to a single channel they transform. Consisting of the junction of two ducts, this duct pierces the periorbital structure surrounding the lacrimal sac and enters from the lateral part of the sac. The entrance angle of this channel into the bag acts as a physiological valve cover and prevents the backflow of tears.

The main reason your nose runs when you cry has to do with these holes and channels.

The lacrimal opening flexes or contracts, depending on the action of the orbicularis muscles. Tears are transferred to this opening under the influence of gravity. For example, tears are sent to the nasal cavity through the Hasner valve. too many tears, because it limits the view These holes and channels are thought to provide an evolutionary advantage.

Bonus: İlker Yılmaz, who used this channel and hole to squirt milk from his eye, was included in the Guinness Book of Records.

Sources: 1, 2