A neonate has a midline cleft lip. This defect results from failed fusion between which structures?
Show answer and explanation
Correct answer: Medial nasal processes
Midline cleft lip results from failure of the medial nasal prominences to fuse. Lateral cleft lip involves the maxillary prominence instead.
Practice all 20 Embryologic Development and Defects questions
Keep practicing
More Embryologic Development and Defects questions
- A newborn with spina bifida occulta shows a tuft of hair over the lumbar spine. Which embryologic structure failed to close?
- A child presents with a horseshoe kidney. This congenital anomaly is due to fusion of the kidneys at which structure?
- A neonate exhibits a holosystolic murmur due to a ventricular septal defect. This defect is most commonly due to failure of formation of wh…
- A newborn has intestinal obstruction due to malrotation of the midgut. Which embryologic event normally occurs at 10 weeks gestation?
- A neonate presents with a persistent cervical sinus. This defect results from incomplete involution of which structure?
- A newborn presents with Potter sequence. Which embryologic abnormality most likely caused this condition?