The term "isthmus tubae uterinae" refers to a narrow portion of the fallopian tube. It should be spelled as "ɪsθməs tuːb eɪ juːtɛrɪnaɪ". The word "isthmus" is derived from the Greek "isthmos" meaning "neck" or "narrow passage". "Tubae" comes from the Latin "tuba" meaning "tube" and "uterinae" means "of the uterus". The correct pronunciation of this term can be challenging, but the use of the International Phonetic Alphabet (IPA) can help to accurately represent the sounds of each syllable.
Isthmus tubae uterinae, also known as the uterine tube isthmus, is a term used in anatomy to describe a specific part of the fallopian tubes in the female reproductive system. The fallopian tubes are bilateral pathways connecting the ovaries to the uterus, allowing for the transport of eggs and the site of fertilization.
The isthmus tubae uterinae refers to the narrow, constricted region of the fallopian tubes located closest to the uterus. It is situated between the ampulla, which is the wider and more dilated part of the tube where fertilization commonly occurs, and the uterine part, where the tube opens into the uterine cavity.
Anatomically, the isthmus tubae uterinae is distinguished by its smaller diameter and thicker muscular wall compared to other portions of the fallopian tubes. This muscularity aids in the transportation of fertilized eggs towards the uterus. Additionally, the isthmus tubae uterinae contains ciliated epithelial cells, which form the internal lining of the tube. These cilia generate coordinated movements that facilitate the movement of eggs and enhance the possibility of conception.
The isthmus tubae uterinae plays a crucial role in the normal functioning of the female reproductive system. Any structural abnormalities or pathological changes in this region may hinder the transportation of eggs or fertilized embryos, potentially leading to infertility or ectopic pregnancies. Understanding the anatomy and physiology of the isthmus tubae uterinae is essential for diagnosing and treating various reproductive disorders in women.
The narrow portion of the Fallopian tube adjoining the uterus.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.