BRS Embryo Head Neck Eye Ear

27 Questions | Total Attempts: 427

SettingsSettingsSettings
Please wait...
Eye Quizzes & Trivia

Questions and Answers
  • 1. 
    The most common site of a thyroglossal cyst is the
    • A. 

      Dorsal aspect of neck

    • B. 

      Anterior border of sternocleidomastoid muscle

    • C. 

      Superior mediastinum

    • D. 

      Midline close to the hyoid bone

    • E. 

      Base of the tongue

  • 2. 
    Taste sensation from the oral part (anterior two thirds) of the tongue is predominantly carried by the
    • A. 

      Trigeminal nerve (CN V)

    • B. 

      Chorda tympani branch of the facial nerve (CN VII)

    • C. 

      Glossopharyngeal nerve (CN IX)

    • D. 

      Superior laryngeal branch of the vagusnerve (CN X)

    • E. 

      Recurrent laryngeal branch of the vagusnerve (CN X)

  • 3. 
    The intermaxillary segment forms via the fusion of the
    • A. 

      Maxillary prominences

    • B. 

      Mandibular prominences

    • C. 

      Palatine shelves

    • D. 

      Lateral nasal prominences

    • E. 

      Medial nasal prominences

  • 4. 
    The most common site of a pharyngeal fistula is the
    • A. 

      Dorsal aspect of neck

    • B. 

      Anterior border of sternocleidomastoid muscle

    • C. 

      Superior mediastinum

    • D. 

      Midline close to the hyoid bone

    • E. 

      Base of the tongue

  • 5. 
    What is the most common congenital malformation of the head and neck region?
    • A. 

      Anterior cleft palate

    • B. 

      Posterior cleft palate

    • C. 

      Thyroglossal duct cyst

    • D. 

      Unilateral cleft lip

    • E. 

      Ankyloglossia

  • 6. 
    Which pharyngeal arch is associated with Treacher Collins syndrome?
    • A. 

      Pharyngeal arch 1

    • B. 

      Pharyngeal arch 2

    • C. 

      Pharyngeal arch 3

    • D. 

      Pharyngeal arch 4

    • E. 

      Pharyngeal arch 6

  • 7. 
    During surgery for removal of a thyroid tumor, a number of small masses of glandular tissue are noted just lateral to the thyroid gland. Metastasis from the thyroid tumor is suspected, but histologic analysis of a biopsy reveals parathyroid tissue and remnants of thymus. How can this finding be explained?
    • A. 

      Tumor tissue has differentiated into normal tissue

    • B. 

      A parathyroid gland tumor is also present

    • C. 

      Ectopic glandular tissue is commonly found in this region

    • D. 

      Patient has DiGeorge syndrome

    • E. 

      The glandular tissue is a result of a thyroglossal duct cyst

  • 8. 
    BRS EMBRYO EAR The cochlear duct contains the spiral organ of Corti and is derived from which of the following?
    • A. 

      Both ectoderm and mesoderm

    • B. 

      Neural crest

    • C. 

      Endoderm

    • D. 

      Mesoderm

    • E. 

      Ectoderm

  • 9. 
    The middle ear cavity
    • A. 

      Is of mesodermal origin

    • B. 

      Develops from pharyngeal pouch 1

    • C. 

      Develops from pharyngeal arch 1

    • D. 

      Develops from pharyngeal arch 2

    • E. 

      Develops from the otic vesicle

  • 10. 
    The otic vesicle
    • A. 

      Gives rise to the bony labyrinth

    • B. 

      Is found adjacent to the rhombencephalon

    • C. 

      Is derived from neuroectoderm

    • D. 

      Gives rise to the auricle (pinna)

    • E. 

      Gives rise to the tympanic membrane

  • 11. 
    The auricle (pinna) of the external ear is innervated by which of the following nerves?
    • A. 

      CN V3

    • B. 

      CN V2

    • C. 

      CN XII

    • D. 

      CN III

    • E. 

      CN VIII

  • 12. 
    VThe stapedius muscle that moves the stapes ossicle is innervated by
    • A. 

      CN V3

    • B. 

      CN XII

    • C. 

      CN III

    • D. 

      CN VII

    • E. 

      Cervical nerves C2 and C3

  • 13. 
    The utricular portion of the otic vesicle gives rise to the
    • A. 

      Ductus reuniens

    • B. 

      Cochlear duct

    • C. 

      Endolymphatic sac

    • D. 

      Scala vestibuli

    • E. 

      Scala tympani

  • 14. 
    The saccular portion of the otic vesicle gives rise to the
    • A. 

      Organ of Corti

    • B. 

      Endolymphatic duct

    • C. 

      Superior semicircular canal

    • D. 

      Crus commune nonampullare

    • E. 

      Lateral semicircular canal

  • 15. 
    The tubotympanic recess gives rise to
    • A. 

      A conduit that interconnects the middle ear and the nasopharynx

    • B. 

      The external auditory meatus

    • C. 

      The internal auditory meatus

    • D. 

      The facial canal

    • E. 

      A conduit that interconnects the perilymphatic space with the subarachnoid space

  • 16. 
    Perilymph enters the subarachnoid space via the
    • A. 

      Cochlear duct

    • B. 

      Ductus reuniens

    • C. 

      Perilymphatic duct

    • D. 

      Vestibular aqueduct

    • E. 

      Utriculosaccular duct

  • 17. 
    Pharyngeal groove 1 gives rise to the
    • A. 

      Internal auditory meatus

    • B. 

      External auditory meatus

    • C. 

      Eustachian tube

    • D. 

      Cervical sinus

    • E. 

      Primary tympanic cavity

  • 18. 
    BRS EMBRYO EYE The surface ectoderm gives rise to which of the following structures?
    • A. 

      Dilator pupillae muscle

    • B. 

      Retina

    • C. 

      Lens

    • D. 

      Sclera

    • E. 

      Choroid

  • 19. 
    Failure of the choroid fissure to close results in
    • A. 

      Congenital detached retina

    • B. 

      Congenital aniridia

    • C. 

      Congenital aphakia

    • D. 

      Coloboma iridis

    • E. 

      Microphthalmos

  • 20. 
    The optic cup is an evagination of which of the following?
    • A. 

      Telencephalon

    • B. 

      Diencephalon

    • C. 

      Mesencephalon

    • D. 

      Metencephalon

    • E. 

      Myelencephalon

  • 21. 
    The epithelium of the ciliary body is derived from
    • A. 

      Ectoderm

    • B. 

      Mesoderm

    • C. 

      Endoderm

    • D. 

      Neuroecloderm

    • E. 

      Neural crest cells

  • 22. 
    Hyperoxygenation of premature infants may result in
    • A. 

      Congenital glaucoma

    • B. 

      Microphthalmia

    • C. 

      Coloboma

    • D. 

      Retrolental fibroplasia

    • E. 

      Persistent pupillary membrane

  • 23. 
    The optic nerve is a tract of the diencephalon that is not completely myelinated until
    • A. 

      5 years after birth

    • B. 

      2 years after birth

    • C. 

      1 year after birth

    • D. 

      3 weeks after birth

    • E. 

      3 months after birth

  • 24. 
    The hyaloid canal is found in the
    • A. 

      Vitreous body

    • B. 

      Choroid

    • C. 

      Optic stalk

    • D. 

      Ciliary body

    • E. 

      Intraretinal space

  • 25. 
    Aqueous humor is produced by the
    • A. 

      Choroid plexus

    • B. 

      Trahecular meshwork

    • C. 

      Ciliary processes

    • D. 

      Vitreous body

    • E. 

      Lens vesicle