Physiology of Joints Flashcards
what are bones separated by in a synovial joint?
cavity containing synovial unit
what are bones united by in a synovial joint?
fibrous capsule
ligaments
tendons
bursae
what is the inner aspect of fibrous capsule lined with?
synovial membrane
what kind of tissue is the synovial membrane?
vascular connective tissue with capillary networks and lymphatics
what kind of cells are present in the synovial membrane
synovial cells
what do synovial cells do?
produce synovial fluid and mucin (hyaluronic acid)
another name for synovial cells
fibroblasts
another name for articular cartilage
hyaline cartilage
what is the difference between a simple and compound synovial joint?
simple= 1 pair of articular surfaces, compound= more than 1 pair of articular surfaces
main role of joints?
structural support
purposeful motion
how do joints create stability?
synovial fluid
ligament attachments
what does synovial fluid do?
lubricates joint,
facilitates joint movement, aids in nutrition of articular cartilage and chondrocytes
is synovial fluid viscous or thin?
viscous
why is synovial fluid viscous?
presence of hyaluronic acid aka mucin
why is articular cartilage so in need of nutrients?
it is avascular so needs its nutrients delivered by a medium
main cells contained in synovial fluid?
mononuclear leukocytes