Vernix caseosa
Vernix caseosa (pronunciation: /ˈvɜːrnɪks kəˈsiːoʊsə/) is a waxy or cheese-like white substance found coating the skin of newborn human babies. It is secreted by the baby's oil glands and serves to protect the baby's skin while it is submerged in amniotic fluid.
Etymology
The term "vernix caseosa" is derived from the Latin words "vernix", meaning varnish, and "caseosa", meaning cheesy. It was first used in the 17th century to describe the substance found on the skin of newborns.
Function
Vernix caseosa acts as a protective barrier for the baby's skin, preventing it from becoming chapped or scratched during the long period of immersion in amniotic fluid. It also helps to regulate the baby's body temperature after birth and may have antibacterial properties.
Composition
Vernix caseosa is composed of sebum (the baby's skin oils), skin cells that have shed off the baby, and lanugo (the fine hairs that cover the baby's body). It is rich in lipids, proteins, and water, which help to moisturize the baby's skin.
Related Terms
- Amniotic fluid: The fluid surrounding and cushioning a growing fetus during pregnancy.
- Sebum: An oily substance secreted by the sebaceous glands in the skin.
- Lanugo: Fine, soft hair that covers the body of a fetus.
See Also
External links
- Medical encyclopedia article on Vernix caseosa
- Wikipedia's article - Vernix caseosa
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