Types of Synovial Joints and Naming Motions Flashcards
1
Q
What is structural classification of joints?
A
based on material binding the bones together and whether or not a joint cavity is present.
2
Q
What are the 3 structural classification of joints?
A
- Fibrous
- Cartilaginous
- Synovial
3
Q
What is functional classification of joints?
A
based on the amount of movement allowed by the joint.
4
Q
What are the three functional classes of joints?
A
- Synarthroses
- Amphiarthroses
- Diarthroses
5
Q
Synarthroses
A
Immovable
6
Q
Amphiarthroses
A
Slightly movable
7
Q
Diarthroses
A
Freely movable
8
Q
- Fibrous
- Occurs between the bones of the skull
- Comprised of interlocking junctions filled with thick and short dense irregular CT
- Binds bones tightly together, but allows for growth during youth.
- In middle age, many skull bones are fused and joints now called synostoses (without movement of bone)
A
Suture Joint
9
Q
- Fibrous
- Bones are connected by a fibrous tissue ligament (dense regular CT)
- Movement is slight to moderate (amphiarthrosis), dependent upon fiber length.
- Ex: connection between the tibia and fibula and the radius and ulna.
A
Syndesmosis
10
Q
- Fibrous
- only 1 - the in-peg socket fibrous joint between a tooth and its alveolar socket (synarthrosis)
- The dense regular CT fibrous connection is referred to as the peiodontal ligament.
A
Gomphosis
11
Q
- Articulating bones are united by cartilage
- There is no joint cavity, just a wedge.
- Two types - synchondroses and symphyses
A
Cartilaginous Joints
12
Q
- A bar of plates of hylaiine cartilage unites the bones
- All synchondroses are synarthrotic joints.
- Ex include: epiphyseal plates of children and adolescents; joint between the costal cartilage of the first rib and the manubrium of the sternum
A
Synchondrosis
13
Q
- Hyaline cartilage covers the articulating surface of the bone and is fused to an intervening pad of fibrocartilage.
- Slightly moveable (amphiarthrotic) joints designed for strength and flexibility.
- Ex: Intervertebral joints and the pubic symphysis of pelvis
A
Symphysis
14
Q
- Joints in which the articulating bones are separated by a fluid-containing joint cavity.
- All are freely moveable (diarthroses)
- Ex: all limb joints, and most other joints of the body
A
Synovial
15
Q
All of these types of Joints have the following General Structure
- Articular cartilage (hyaline) at end of bone
- Joint (synovial) cavity = small potential space
- Articular capsule; outer fibrous capsule of dense irregular CT, inner “synovial membrane” of loose connective CT, plus serous membrane.
- Synovial Fluid
- Reinforcing Ligaments
- Nerves and Blood Vessels
A
Synovial Joints
