"Chalazions" Natural Recordings by Native Speakers
Chalazions are small, hard lumps that can form in the eyelids, typically in the outer eyelid near the eyelashes. They are caused by a blockage of the glands in the eyelid that produce oils, and can cause redness, swelling, and discomfort.
Chalaza is a term used in biology, particularly in embryology and anatomy. A chalaza is a direct attachment of the yolk sac to the chorion, which is the outermost layer of the embryo, during fetal development. It provides a connection between the yolk sac, which supplies the fetus with vital nutrients and oxygen, and the chorion, which is responsible for exchanging gases and waste products with the mother's bloodstream.