Arthrology Flashcards
Synarthroses (2 subcategories)
Least mobile,
Fibrous joints- bones connected by connective tissue proper
Cartilaginous joints- bones connected by solid mass of cartilage
What is arthrology
The study of joints
Diarthrosis or synovial joint
Most mobile, most common
Bones connected by a hallow sleeve of connective tissue proper
What are the two joint classifications?
Synarthroses and diathrosis/ synovial joints
What are the three types of fibrous joints?
Interosseous membrane- bones joined by a sheet of dense connective tissue.
Syndesmosis- bones joined by bands or thin layers of dense connective tissue
Sutures- bony junctions with minimal amounts of connective tissue, growth surface, shock absorber
Types of syndesmosi (there are 4 but you only need to know this one)
- Gomphosis
What type of sutures are there? (4)
Plane sutures
Squamous
Serrate
Denticulate
Two types of cartilaginous joints
Synchondrosis- only found in children, found in the end of bones, growth plate called epiphyseal growth plate.
Symphysis, intervertebral discs and symphysis pubis, strong fibrocartilage, shock absorption
Synovial joints
Hollow tubing holding 2 bones together. Covers Articular cartilage and fluids. Acts as a bridge
Fibrous membrane
Outside layer, continuation of periosteum
Synovial membrane
Inside layer, fibrovascular, cells that make our fluids for the synovial fluid
Synovial fluid
Lubricates Articular surface, helps supply avascular cartilage with needed nutrients
Meniscus
In the knee, 2 on left 2 on right side,
Function of Articular disc and meniscus (5)
- Shock absorption
- Provides a better fit between Articulating bony surfaces
- adaptable surfaces for combined movements
- Distributing the weight over a greater contact surface
- Spreading synovial lube across the Articular surfaces of the joints
Ligaments structure and function (5)
Connect to bone Don't contract Connective tissue Great tensile strength Mostly dense regular
