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Related Concept Videos

Bone Markings01:26

Bone Markings

Bones have various surface features that help form joints and attach to other soft tissues. Depending on the function, bone markings are categorized into articulating projections, processes for attachment, depressions, and openings.
Articulating Projections
Articulating projections are found where two bones meet to form a joint. These structures are usually found at the ends of bones. The largest articulation is a rounded projection called the head, supported by a narrow neck at the ends of...
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Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
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The Auditory Ossicles

The auditory ossicles of the middle ear transmit sounds from the air as vibrations to the fluid-filled cochlea. The auditory ossicles consist of two malleus (hammer) bones, two incus (anvil) bones, and two stapes (stirrups), one on each side. These bones develop during the fetal stage and are the ones to ossify first. They are fully mature at birth and do not grow afterward.
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...

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Related Experiment Video

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Question mark ears and post-auricular tags.

Erica H Gerkes1, Conny M A van Ravenswaaij, Anthonie J van Essen

  • 1Department of Genetics, University Medical Center Groningen, University of Groningen, PO Box 30.001, 9700 RB Groningen, The Netherlands. e.h.gerkes@medgen.umcg.nl <e.h.gerkes@medgen.umcg.nl>

European Journal of Medical Genetics
|March 4, 2008
PubMed
Summary
This summary is machine-generated.

Question mark ears, an uncommon external ear malformation, can be an isolated finding or a key sign of auriculo-condylar syndrome. This syndrome may also feature post-auricular tags, warranting further investigation.

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Area of Science:

  • Otolaryngology
  • Medical Genetics

Background:

  • Question mark ears are a distinctive external ear malformation.
  • This condition can occur in isolation or as part of a syndrome.

Purpose of the Study:

  • To highlight question mark ears as a potential indicator of auriculo-condylar syndrome.
  • To emphasize the association with post-auricular tags.

Main Methods:

  • Clinical observation of external ear malformations.
  • Review of patient cases with question mark ears.

Main Results:

  • Question mark ears are pathognomonic for auriculo-condylar syndrome.
  • Post-auricular tags are an additional potential sign of this syndrome.

Conclusions:

  • The presence of question mark ears necessitates further evaluation for auriculo-condylar syndrome.
  • Identifying these ear malformations aids in diagnosing associated genetic conditions.