Hypotympanum
Hypotympanum
- Related terms: Hypotympanic recess
Definition
Hypotympanum refers to that part of the tympanic cavity which lies inferior to the level of the tympanic membrane. It is continuous superiorly with the mesotympanum, which in turn communicates with the epitympanic recess above. Together they constitute the middle ear cavity (or the tympanic cavity). The space is filled with air and is lined by mucous membrane. It is situated within the petrous part of the temporal bone.
To summarize: Epitympanic recess + mesotympanum + hypotympanum = Tympanic cavity. Details regarding hypotympanum and other parts of tympanic cavity can be found here: Tympanic cavity.
References
Text written by Muhammad A. Javaid, MD, PhD © 2023 IMAIOS.
Drake, R.L., Vogl, A.W. and Mitchell, A.W.M. (2009). ‘Chapter 8: Head and Neck’ in Gray’s anatomy for Students. (2nd ed.) Philadelphia PA 19103-2899: Elsevier, pp. 906-912.
Standring, S. and Gray, H. (2016). ‘Chapter 37: External and middle ear’ in Gray’s anatomy The anatomical Basis of Clinical Practice. (41st ed.) New York: Elsevier, pp. 632.
