Activity and Mobility Flashcards
(485 cards)
How many bones are in the human body?
206 bones
What are joints?
Where two or more bones connect
What are the three classifications of joints based on movement?
- Synarthrosis
- Amphiarthrosis
- Diarthrosis
What type of joint is classified as slightly movable?
Amphiarthrosis
Provide an example of an amphiarthrosis joint.
Joints between vertebrae
What type of joint is classified as freely movable?
Diarthrosis (synovial joints)
Provide examples of diarthrosis joints.
- Knees
- Hips
What type of movement do hinge joints allow?
Flexion and extension only
Provide examples of hinge joints.
- Knees
- Elbows
What type of movement do ball-and-socket joints allow?
- Flexion
- Extension
- Abduction
- Adduction
- Circumduction
Provide examples of ball-and-socket joints.
- Hips
- Shoulders
What type of joint is classified as immobile?
Synarthrosis
Provide an example of a synarthrosis joint.
Skull sutures
Which type of joints have the greatest degree of movement?
Synovial joints
What covers opposing bone surfaces in synovial joints?
Hyaline cartilage
What is the function of hyaline cartilage in joints?
Provides lubrication and allows bones to move without sliding directly on each other
What happens to hyaline cartilage in arthritis?
It can be depleted, causing symptoms
What is the synovium?
Inner lining of the joint capsule
What does the synovium produce?
Synovial fluid
What is the role of synovial fluid?
Lubricates joints
What condition can affect the impairment of synovial fluid?
Rheumatoid arthritis
What are Fibrous Joints also known as?
Synarthrodial
These joints are immovable.
What characterizes the structure of Fibrous Joints?
No joint cavity; bones connected by fibrous tissue
This structure contributes to their immobility.
Give an example of a Fibrous Joint.
Skull sutures
These are the joints between the bones of the skull.