The word "velamentum" can be tricky to spell for those unfamiliar with Latin terms. The spelling follows the phonetic transcription [vɛləˈmɛntəm], where the first syllable "vela" is pronounced "VEH-luh" and the second syllable "mentum" is pronounced "MEN-tuhm". The word refers to a thin membrane that connects the umbilical cord to the placenta in some mammals, including humans. While it may not be a commonly used term, correct spelling can be important in medical or scientific contexts.
Velamentum is a term used in anatomy and biology, specifically in relation to the fetal membrane that encapsulates the umbilical cord. It refers to an abnormal condition in which the blood vessels of the umbilical cord are unnaturally exposed and lack the protection of the Wharton's jelly. Normally, the umbilical cord is insulated and cushioned by a gelatinous substance called Wharton's jelly, which acts as a protective barrier for the blood vessels within it. However, in the case of velamentum, the blood vessels are not completely covered by Wharton's jelly.
This condition typically occurs when the umbilical cord inserts into the fetal membrane away from its normal position in the center of the placenta. As a result, the unprotected blood vessels are vulnerable to compression or rupture, increasing the risk of complications during pregnancy and childbirth. Velamentum can lead to reduced blood flow to the fetus, potentially resulting in fetal growth restriction or other abnormalities.
Diagnosing velamentum usually requires advanced ultrasound imaging techniques, which can detect the abnormal placement and structural changes of the umbilical cord and fetal membranes. In severe cases, management may involve close monitoring, regular prenatal check-ups, and planning delivery in a specialized healthcare setting to ensure minimal risk to both the mother and the baby.
Velum, velamen, a membrane or membranous envelope or covering.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word velamentum has Latin origins. It comes from the Latin noun velamentum, which means veil or covering. In Latin, velamentum is derived from the verb velare, meaning to cover or to veil.