Genetic and Medical Glossary

Glossary

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There are 8 names in this directory beginning with the letter V.
VACTERL–association
acronym for association of seven birth defects—vertebral abnormalities (V), anal atresia (A), cardiac (heart) defects (C), tracheal-esophageal abnormalities (TE), renal/kidney and radial abnormalities (R), limb abnormalities (L) and single umbilical artery (S); cause unknown

Variant
something that differs in some characteristic from the class to which it belongs

Velopharyngeal insufficiency
improper closing of the velopharyngeal sphincter (soft palate muscle) during speech characterized by an acute nasal quality of the voice

Ventricular septal defect
hole or defect in the muscular wall of the heart that splits the lower chamber into two ventricles; small holes can close spontaneously; large holes can lead to progressive heart failure and require surgery

Vermilion, lower lip, everted
inner aspect of the lower lip vermilion (normally apposing the teeth) visible in a frontal view

Vermilion, upper lip, tented
triangular appearance of the oral aperture with the apex in the midpoint of the upper vermilion and the lower vermilion forming the base

Vesico–ureteral reflux
abnormal flow of urine from the bladder to the upper urinary tract

Visceral
referring to the viscera, the internal organs of the body, specifically those within the chest (as the heart or lungs) or abdomen (as the liver, pancreas or intestines)

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