Elastic cartilage

Source: Wikipedia, the free encyclopedia.
Elastic cartilage
A cross section of mammalian elastic cartilage
Lateral side of the auricle
Details
Part ofOuter ear, Eustachian tube and epiglottis
Identifiers
Latincartilago elastica
MeSHD051472
THH2.00.03.5.00018
FMA64785
Anatomical terminology

Elastic cartilage, fibroelastic cartilage or yellow fibrocartilage

auditory canal[3] Eustachian tube, corniculate and cuneiform laryneal cartilages,[3] and the epiglottis. It contains elastic fiber networks and collagen type II fibers.[4] The principal protein is elastin
.

Structure

Elastic cartilage is

pinnae (the external ear flaps of many mammals). Elastin fibers stain dark purple/black with Verhoeff's stain
.

The extracellular matrix contains Elastin, fibrillin, glycoproteins, collagen types II, IX, X, and XI, and the proteoglycan aggrecan.[2] the components within the extracellular matrix are produced by the chondroblasts located within the edges of the perichondrium.[2]

Elastic fibers within the extracellular matrix are made up of elastin proteins which

co-polymerize with fibrillin forming fiber-like elastic chains.[2] When the elastic fibers are relaxed the elastic chains appear disorganized, when tensile pressure is give the elastic chains appear organized and return to a disorganized state when the pressure is released.[2]

Collagen fibers form networks to provide strength and structural framework for the molecules within the extracellular matrix.[2]

Function

  • Provide support[2]
  • Maintain shape in response to tension, compression, and bending[2]

See also

List of distinct cell types in the adult human body

References

Public domain This article incorporates text in the public domain from page 279 of the 20th edition of Gray's Anatomy (1918)

  1. ^ "Elastic cartilage histology". Kenhub. Retrieved 2022-03-08.
  2. ^ a b c d e f g h i j k Editors, B. D. (2019-04-26). "Elastic Cartilage". Biology Dictionary. Retrieved 2021-03-12. {{cite web}}: |last= has generic name (help)
  3. ^ a b c d e f "Elastic cartilage histology". Kenhub. Retrieved 2021-03-12.
  4. ^ "Elastic cartilage". Medline Plus/Merriam-Webster Dictionary. Retrieved 1 March 2015.

External links