Frontonasal prominence MCQ 3+

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• Persistent truncus arteriosus occurs due to
  ক

  Failure of conotruncal ridge to fuse

  খ

  Failure of descend of conotruncal ridge towards the ventricle

  গ

  Migration of neural crest cells towards truncal and bulbar ridges

  ঘ

  Aorticopulmonary septum following an oblique course

  ঙ

  Anterior displacement of aorticopulmonary septum
• A new born baby is noted to have a left unilateral cleft. Behaving no abnormalities-at the palate. The developmental defects accountable are
  ক

  Failure of the left maxillary prominence to unite with left medial nasal prominance

  খ

  Failure of the left lateral palatine process to fuse with the median palatine process

  গ

  Failure of the right and left medial nasal prominence to merge

  ঘ

  Failure of the left maxillary process to fuse with the medial nasal process

  ঙ

  Lip muscles to divide completely
• Derivatives of frontonasal prominence include
  ক

  Bridge of the nose

  খ

  Forehead

  গ

  Cheek

  ঘ

  Lateral part of upper lip

  ঙ

  Lower lip