Embryology: Muscles and Cranial Nerves Development
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Questions and Answers

Which structure develops from the first pharyngeal arch?

  • Face
  • Thyroid gland
  • Stapedial artery (correct)
  • Common carotid artery
  • What contributes to the development of the face in embryology?

  • Adrenal medulla
  • Truncus arteriosus
  • Meninges
  • Cranial mesenchyme (correct)
  • Which artery is associated with the second pharyngeal arch?

  • Common carotid artery
  • Stapedial artery (correct)
  • External carotid artery
  • Maxillary artery
  • During embryonic development, what gives rise to the tongue?

    <p>Cranial mesoderm (B)</p> Signup and view all the answers

    Which structure originates from the third pharyngeal arch?

    <p>Mandibular component (D)</p> Signup and view all the answers

    What are the primary structures that develop during the 4th week in pharyngeal arches?

    <p>Nerve and artery (D)</p> Signup and view all the answers

    Where does the thyroid gland originate during embryonic development?

    <p>Near the base of the tongue, between the first and second pharyngeal pouches (C)</p> Signup and view all the answers

    Which structure forms as a remnant from the developmental process of the pharyngeal arches?

    <p>Eustachian tube (B)</p> Signup and view all the answers

    What is the eventual fate of the cervical sinus in embryonic development?

    <p>Remnants present in the neck region (B)</p> Signup and view all the answers

    Which muscle is derived from the occipital somites during development?

    <p>Stylopharyngeus muscle (C)</p> Signup and view all the answers

    During which week of development does the tongue begin to form?

    <p>4th week (B)</p> Signup and view all the answers

    Which pharyngeal arch is responsible for the development of facial expression muscles?

    <p>Second pharyngeal arch (D)</p> Signup and view all the answers

    What is the nerve supply responsible for the sensation in the posterior 1/3rd of the tongue?

    <p>IX (D)</p> Signup and view all the answers

    Which of the following processes merge to form the nasomedial process during face development?

    <p>Nasolateral process (C)</p> Signup and view all the answers

    At what stage of development do the maxilla and mandible start fusing across the midline?

    <p>33 days (B)</p> Signup and view all the answers

    Which part of the palate is formed by the median palatine process from the intermaxillary segment of the maxilla?

    <p>Primary palate (C)</p> Signup and view all the answers

    What can defects in the development of pharyngeal cleft 1 result in?

    <p>Preauricular cysts and/or fistulas (C)</p> Signup and view all the answers

    What happens as a developmental anomaly if there are defects in the development of pharyngeal clefts 2-4?

    <p>Appearance of cervical cysts or fistulas along sternocleidomastoid border (A)</p> Signup and view all the answers

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