circular layer of tympanic membrane

circular layer of tympanic membrane
stratum circulare of tympanic membrane.

Medical dictionary. 2011.

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  • stratum circulare of tympanic membrane — circular layer of tympanic membrane: the inner part of the fibrous stratum of the membrane, consisting of circularly coursing fibers deep to the mucous layer of the tympanic membrane; it is best developed near the periphery …   Medical dictionary

  • fibrous stratum of tympanic membrane — the middle layer of the membrane, consisting of radiating fibers externally (stratum radiatum) and circular fibers internally (stratum circulare). Called also fibrous layer of tympanic membrane …   Medical dictionary

  • tympanic membrane — Anat., Zool. eardrum. See diag. under ear. [1855 60] * * * ▪ anatomy also called eardrum,   membrane in the human ear that receives sound vibrations from the outer air and transmits them to the auditory ossicles, which are tiny bones in the… …   Universalium

  • layer — A sheet of one substance lying on another and distinguished from it by a difference in texture or color or by not being continuous with it. SEE ALSO: stratum, lamina. SYN: panniculus. ameloblastic l. the internal l. of the enamel organ. SYN: enam …   Medical dictionary

  • membrane — 1. A thin sheet or layer of pliable tissue, serving as a covering or envelope of a part, as the lining of a cavity, as a partition or septum, or to connect two structures. SYN: membrana [TA]. 2. SYN: biomembrane. [L. membrana, a skin or m …   Medical dictionary

  • stratum — One of the layers of differentiated tissue, the aggregate of which forms any given structure, such as the retina or the skin. SEE ALSO: lamina, layer. [L. sterno, pp. stratus, to spread out, strew, ntr. of pp. as noun, s., a bed cover, layer] s.… …   Medical dictionary

  • Muscle — is the tissue of the body which primarily functions as a source of power. There are three types of muscle in the body. Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart… …   Medical dictionary

  • ear, human — ▪ anatomy Introduction       organ of hearing and equilibrium that detects and analyzes noises by transduction (or the conversion of sound waves into electrochemical impulses) and maintains the sense of balance (equilibrium).  The human ear, like …   Universalium

  • Ear — The ear is the sense organ that detects sounds. The vertebrate ear shows a common biology from fish to humans, with variations in structure according to order and species. It not only acts as a receiver for sound, but plays a major role in the… …   Wikipedia

  • human embryology — ▪ biology Introduction       the process encompassing the period from the formation of an embryo, through the development of a fetus, to birth.       The human body, like that of most animals, develops from a single cell produced by the union of… …   Universalium

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