Embryology Anomalies and Development Guide
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Questions and Answers

Which term describes the shortness of digits due to a reduction in the length of phalanges?

  • Polydactyly
  • Brachydactyly (correct)
  • Clubfoot
  • Syndactyly
  • What is the term for the presence of more than the usual number of fingers or toes?

  • Clubfoot
  • Polydactyly (correct)
  • Syndactyly
  • Osseous syndactyly
  • What type of anomaly results from failure of the webs between digits to degenerate?

  • Brachydactyly
  • Osseous syndactyly
  • Syndactyly (correct)
  • Clubfoot
  • In which side of the foot is the extra toe usually found in cases of polydactyly?

    <p>Lateral side</p> Signup and view all the answers

    What is the most common type of clubfoot anomaly?

    <p>Talipes equinovarus</p> Signup and view all the answers

    Which anomaly involves fusion of bones (synostosis) due to failure of notches between digital rays to develop?

    <p>Osseous syndactyly</p> Signup and view all the answers

    What is the primary cause of a bilateral cleft lip?

    <p>Failure of mesenchymal masses in both maxillary prominences to unite with medial nasal prominences</p> Signup and view all the answers

    What anomaly may serve as an indicator for associated conditions like atresia of the external acoustic meatus?

    <p>Microtia</p> Signup and view all the answers

    What causes the absence of the external acoustic meatus?

    <p>Failure of inward expansion of the first pharyngeal groove and meatal plug disappearance</p> Signup and view all the answers

    Which condition is characterized by drooping of the superior eyelids due to muscle abnormalities?

    <p>Congenital bilateral ptosis</p> Signup and view all the answers

    What anomaly often results from suppressed mesenchymal proliferation?

    <p>Microtia</p> Signup and view all the answers

    Which anomaly is a common indicator for associated ear anomalies like atresia of the external acoustic meatus?

    <p>Auricular appendages (skin tags)</p> Signup and view all the answers

    Which anomaly is characterized by the absence of upper and lower limbs?

    <p>Quadruple amelia</p> Signup and view all the answers

    In limb anomalies caused by maternal thalidomide ingestion, what does meromelia of the upper limbs refer to?

    <p>Presence of rudimentary stumps in place of limbs</p> Signup and view all the answers

    What anomaly is depicted by a radiograph showing absence of the right fibula in a female fetus?

    <p>Meromelia with the rudimentary upper limbs attached directly to the trunk</p> Signup and view all the answers

    Which limb anomaly results in shortened right leg with bowed and hypoplastic femur and tibia?

    <p>Radiograph showing partial absence and fusion of tibia and fibula</p> Signup and view all the answers

    In skeletal system anomalies, what does absence of central digits of the hands lead to?

    <p>Radiograph showing partial absence and fusion of tibia and fibula</p> Signup and view all the answers

    What term describes limb anomalies with the rudimentary upper limbs attached directly to the trunk?

    <p>Meromelia with the rudimentary upper limbs attached directly to the trunk</p> Signup and view all the answers

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