Dictionary > Synovial membrane

Synovial membrane

Definition
noun, plural: synovial joints
The connective tissue lining the inner surface of the joint capsule of a synovial joint
Supplement
Synovial joints are movable joints that enable abduction, adduction, extension, flexion, and rotation. It is comprised of a sac-like fibrous joint capsule, a synovial cavity filled with a synovial fluid, and a layer of articular cartilage. The joint capsule is the capsule enveloping a synovial joint. In general, it is comprised of two layers. The first layer is a fibrous membrane that lies in the outer part of the capsule. It is made up mainly of ligaments, owing to its fibrous nature. The second layer, which is also the inner layer of the joint capsule, is the synovial membrane.
The synovial membrane is the inner layer of the joint capsule made up of intima and subintima (an outer layer of connective tissue). The intima is the inner layer of the synovial membrane consisting of two types of cells: fibroblast-like (type B) synovial cells and macrophage-like (type A) synovial cells. The type B synovial cells release components of the synovial fluid into the synovial cavity. The synovial membrane, therefore, is involved in secreting components for the synovial fluid that fills the synovial cavity. The synovial fluid is the clear, viscid fluid that functions by lubricating the articulating joints, supplying nutrients and oxygen, and removing metabolic wastes.
Synonym(s):

  • synovium
  • stratum synoviale

See also:

  • synovial fluid
  • joint capsule
  • synovial joint


    You will also like...

    Mātauranga Māori and Science Collaboration
    Mātauranga Māori and Science

    Mātauranga Māori is the living knowledge system of the indigenous people of New Zealand, including the relationships t..

    Origins of Life on Earth
    Origins of Life on Earth

    Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..

    New Zealand - Biodiversity fauna
    New Zealand’s Biodiversity

    Find out more about New Zealand's unique biodiversity by exploring a range of different ecosystems and the key role of s..

    Young plant growing from the soil.
    Soils

    Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..

    Human Reproduction
    Human Reproduction

    Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..

    Selective Breeding
    Selective Breeding

    Gregor Mendel's studies into Monohybrid and Dihybrid crossing and Charles Darwin's study of evolution and natural select..