Podcast
Questions and Answers
What is the most common inner ear developmental anomaly?
What is the most common inner ear developmental anomaly?
- Narrow IAC with normal CN7
- Enlarged vestibular aqueduct (correct)
- Cochlear aqueduct abnormalities
- Internal auditory canal abnormalities
Which of the following is a contraindication for stapedectomy?
Which of the following is a contraindication for stapedectomy?
- Cochlear aqueduct abnormalities
- Internal auditory canal abnormalities (correct)
- Narrow IAC with normal CN7
- Enlarged vestibular aqueduct
What can a narrow IAC with normal CN7 indicate?
What can a narrow IAC with normal CN7 indicate?
- Undeveloped CN5
- Undeveloped CN7
- Undeveloped CN8 (correct)
- Undeveloped CN6
Which genes influence ear and middle ear development?
Which genes influence ear and middle ear development?
Where does ear auricle development come from?
Where does ear auricle development come from?
Where does the middle ear cavity come from?
Where does the middle ear cavity come from?
Where do almost all ossicles come from?
Where do almost all ossicles come from?
What is a rare inner ear developmental anomaly?
What is a rare inner ear developmental anomaly?
What hindbrain segmentation genes are related to inner ear development?
What hindbrain segmentation genes are related to inner ear development?
When is the development of the membranous labyrinth completed?
When is the development of the membranous labyrinth completed?
Study Notes
- Enlarged vestibular aqueduct is the most common inner ear developmental anomaly.
- Cochlear aqueduct abnormalities are rare.
- Internal auditory canal abnormalities can be a contraindication for stapedectomy.
- Narrow IAC with normal CN7 can indicate undeveloped CN8 and is a contraindication for CI.
- Ear and middle ear development are influenced by genes such as HoxA2 and PACT.
- Inner ear development is related to hindbrain segmentation genes such as Hoxa1 and Pax2.
- Ear auricle development comes from the first and second branchial arch.
- Middle ear cavity comes from the first pharyngeal pouch.
- Almost all ossicles come from neural crest mesenchyme of the first and second branchial arch.
- The development of the membranous labyrinth is completed by the 20th week of gestation.
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Description
Test your knowledge of inner and outer ear development with this informative quiz! From the role of HoxA2 and Pax2 in inner ear development to the origin of the ear auricle, this quiz covers a range of topics related to ear development. Whether you're a medical student or simply curious about the fascinating process of ear development, this quiz will challenge and educate you. So put on your thinking cap and see how much you know about the development of the human ear!
