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Anatomy and Physiology I
Terms in this set (20)
A polymer made of tyrosine amino acids
(Ranges in color from yellow to reddish-brown to black)
What are joints and articulations?
Sites where two or more bones meet
Where is the weakest part of the skeleton?
How are joints classified?
By structure and function
Structurally, there are three types of joints. What are they?
Fibrous, cartilaginous, and synovial joints.
Functional classification is based on...
The amount of movement allowed at the joint.
Slightly movable joints
amphi= on both sides
Freely movable joints
dia= through, apart
What are the three types of fibrous joints?
Sutures, syndesmoses, and gomphoses
What does synostoses literally mean?
When bones are connected by a ligament.
What is a ligament?
A cord or band of fibrous tissue
A peg-in-socket fibrous joint
Only example: articulation of a tooth with its bony alveolar socket. (Periodontal ligament)
gompho (Greek)= nail or bolt
What are cartilaginous joints?
What do they lack?
What are the two types?
In cartilaginous joints the articulating bones are united by cartilage.
They lack a joint cavity
The two types are synchondroses and symphyses.
What is synchondrosis?
Junction of cartilage
What is symphyses?
When the articular surfaces of the bones are covered with articular (hyaline) cartilage, which in turn is fused to an intervening pad or plate of fibrocartilage.
Fibrocartilage is compressible and resilient and acts as a
Shock absorber and permits a limited amount of movement at the joint.
What are synovial joints?
Joints in which the articulating bones are separated by a fluid-containing joint cavity.
(All synovial joints are freely movable diarthroses.)
Synovial joints have 5 distinguishing features.
What are they?
1. Articular cartilage
2. Joint (synovial) cavity
3. Articular capsule
4. Synovial fluid
5. Reinforcing ligaments
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