Teratology and Congenital Malformations Quiz

See Congenital Anomaly Is a Description. Option E is correct because congenital means "present from before birth", and it describes the timing of origin, not the cause. A congenital anomaly is a structural or functional difference that originates in prenatal life, and the word covers everything from a heart defect to a metabolic problem. It says nothing about why the condition arose. The cause might be a chromosome or gene change, an environmental exposure, an infection, maternal disease, mechanical constraint in the uterus, or an interaction among several of these. Recognition can happen at any time: on antenatal ultrasound, at delivery, or only later, as with some hearing, visual or metabolic effects. The classic trap is to equate congenital with inherited or with obvious at birth, and neither is true. Think of it like a date stamp that says when the condition started and does not name who or what caused it. In the same way, the word anomaly is a description, and it does not identify the mechanism or the agent from appearance alone.

• Meaning: congenital means present from before birth
• Timing, not cause: the word describes when the condition originated and not why
• Recognition: it can be found at any time, so congenital does not mean inherited or obvious at birth