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Latest revision as of 21:52, 16 March 2025
Fenestra is a term used in medicine and biology to refer to a small opening or pore. The term is derived from the Latin word for "window". In the context of medicine, fenestra can refer to several different types of small openings in the body, including those in the bones, blood vessels, and cells.
Anatomy[edit]
In anatomy, a fenestra is a small opening in a bone. These openings allow for the passage of blood vessels and nerves. For example, the fenestra rotunda and fenestra ovalis are two openings in the temporal bone of the skull that allow for the passage of nerves related to hearing and balance.
Histology[edit]
In histology, a fenestra refers to small openings in the walls of blood vessels, particularly capillaries and sinusoids. These fenestrae allow for the exchange of substances between the blood and the surrounding tissues. The presence and size of fenestrae can vary depending on the type of tissue and the physiological needs of the body.
Cell Biology[edit]
In cell biology, a fenestra is a small pore in the nuclear envelope. These fenestrae allow for the transport of molecules between the nucleus and the cytoplasm.
