Hearing - Middle Ear Development: Difference between revisions

Revision as of 15:04, 4 June 2010

Introduction

The middle ear ossicles (bones) are derived from 1st and 2nd arch mesenchyme. The space in which these bones sit is derived from the 1st pharyngeal pouch.

Categories: Hearing | Outer Ear | Middle Ear | Inner Ear | Balance

Historic Embryology - Hearing
Historic Embryology: 1880 Platypus cochlea \| 1892 Vertebrate Ear \| 1902 Development of Hearing \| 1906 Membranous Labyrinth \| 1910 Auditory Nerve \| 1913 Tectorial Membrane \| 1918 Human Embryo Otic Capsule \| 1918 Cochlea \| 1918 Grays Anatomy \| 1922 Human Auricle \| 1922 Otic Primordia \| 1931 Internal Ear Scalae \| 1932 Otic Capsule 1 \| 1933 Otic Capsule 2 \| 1936 Otic Capsule 3 \| 1933 Endolymphatic Sac \| 1934 Otic Vesicle \| 1934 Membranous Labyrinth \| 1934 External Ear \| 1938 Stapes - 7 to 21 weeks \| 1938 Stapes - Term to Adult \| 1940 Stapes \| 1942 Stapes - Embryo 6.7 to 50 mm \| 1943 Stapes - Fetus 75 to 150 mm \| 1946 Aquaductus cochleae and periotic (perilymphatic) duct \| 1946 aquaeductus cochleae \| 1948 Fissula ante fenestram \| 1948 Stapes - Fetus 160 mm to term \| 1959 Auditory Ossicles \| 1963 Human Otocyst \| Historic Disclaimer

Tympanic Cavity

derived from first pharyngeal pouch
extends as tubotympanic recess - during week 5 recess contacts outer ear canal
mesoderm between 2 canals forms tympanic membrane
expands to form tympanic recess
stalk of recess forms auditory tube(eustachian tube, pharyngotympanic tube)

Ossicles

Pharyngeal arch cartilages

develop from first and second pharyngeal arches
tympanic cavity enlarges to incorporate
coats with epithelia

first arch mesoderm

tensor tympani muscle
malleus and incus

second arch mesoderm

stapedius muscle and stapes

Middle Ear Genes - gooscoid, RARs, Prx1, Otx2, Hoxa1, Hoxb1, endothelian related molecules

Eustacian tube angle

Additional Images

References

Reviews

Articles

Search PubMed

Search Pubmed: Middle Ear Development Ossicle Development

External Links

Neuroscience Neuroscience - The Middle Ear

Glossary Links

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Cite this page: Hill, M.A. (2024, May 2) Embryology Hearing - Middle Ear Development. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Hearing_-_Middle_Ear_Development

What Links Here?

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+== References ==
+<references/>
+===Reviews===
+===Articles===
+===Search PubMed===
+'''Search Pubmed:''' [http://www.ncbi.nlm.nih.gov/sites/entrez?db=pubmed&cmd=search&term=Middle%20Ear%20Development Middle Ear Development] [http://www.ncbi.nlm.nih.gov/sites/entrez?db=pubmed&cmd=search&term=ossicle%20Development Ossicle Development]
 ==External Links==