Anulus fibrosus
Anulus Fibrosus
Anulus fibrosus (pronunciation: /ˈæn.jʊ.ləs faɪˈbroʊ.səs/) is a part of the Intervertebral disc that encircles the Nucleus pulposus, providing strength and flexibility to the spine.
Etymology
The term "Anulus fibrosus" is derived from Latin, where "anulus" means ring and "fibrosus" refers to the fibrous nature of the tissue.
Structure
The Anulus fibrosus is composed of several layers, or lamellae, of fibrocartilage. The fibres in these layers are oriented in different directions to provide strength and flexibility. The outer layers are primarily composed of Type I collagen, while the inner layers contain more Type II collagen.
Function
The primary function of the Anulus fibrosus is to contain the Nucleus pulposus and distribute pressure evenly across the disc. It also allows for movement and flexibility of the spine, while providing resistance to twisting and bending forces.
Related Terms
- Intervertebral disc: The disc that separates the vertebrae in the spine, composed of the Anulus fibrosus and the Nucleus pulposus.
- Nucleus pulposus: The inner part of the intervertebral disc, encircled by the Anulus fibrosus.
- Type I collagen: The most abundant type of collagen in the body, found in tissues including the outer layers of the Anulus fibrosus.
- Type II collagen: A type of collagen found in cartilage, including the inner layers of the Anulus fibrosus.
External links
- Medical encyclopedia article on Anulus fibrosus
- Wikipedia's article - Anulus fibrosus
This WikiMD dictionary article is a stub. You can help make it a full article.
Languages: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
Urdu,
বাংলা,
తెలుగు,
தமிழ்,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
European
español,
Deutsch,
français,
русский,
português do Brasil,
Italian,
polski