Spiral arteries
Spiral Arteries
Spiral arteries (pronunciation: /ˈspaɪrəl ˈɑːrtəriz/) are small, winding blood vessels that supply blood to the endometrium of the uterus in mammals. They are named for their spiral shape.
Etymology
The term "spiral arteries" is derived from the Latin spiralis meaning "winding" or "coiling", and the Greek arteria meaning "windpipe, artery". This is in reference to the coiled, winding shape of these arteries.
Function
Spiral arteries play a crucial role in the menstrual cycle and pregnancy. During the menstrual cycle, these arteries constrict and dilate to control blood flow to the endometrium. In pregnancy, they undergo significant changes to increase blood flow to the placenta, a process known as spiral artery remodeling.
Related Terms
- Endometrium: The inner lining of the uterus where spiral arteries are located.
- Uterus: The female reproductive organ that houses the endometrium and spiral arteries.
- Blood vessel: The tubes through which blood flows in the body. Spiral arteries are a type of blood vessel.
- Spiral artery remodeling: The process by which spiral arteries change during pregnancy to increase blood flow to the placenta.
External links
- Medical encyclopedia article on Spiral arteries
- Wikipedia's article - Spiral arteries
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