Joints Flashcards
What is another name for immovable joints?
Fibrous
What are immovable joints?
segments of bone are fused together (ex. skull)
What is another name for limited motion joints?
Cartilaginous
What is an example of a limited motion joint?
Vertebrae
What is a synovial joint?
A fluid-filled space between smooth cartilage pads at the end of articulating bones
What is the function of a synovial joint?
reduces friction
allows bones to move freely
What are the three main parts of a synovial joint?
Joint capsule
Cartilage
Synovial fluid
How many types of synovial joints are there?
6
What are the types of synovial joints?
Plane, hinge, pivot, condyloid, saddle, ball and socket
What synovial joint has the least mobility?
Plane joints
What synovial joint has the most mobility?
Ball and socket joints
Examples of ball and socket joints
Shoulder and hip
How many axes can ball and socket joints move along?
3
Examples of hinge joints
Ankle, elbow, knee
How many axes can hinge joints move along?
1 (flexion and extension)
What bone acts as a lever for the shoulder muscles?
Humerus
What muscle straightens the arm (extensor)?
Tricep
Muscles that bend the arm (flexor)?
Bicep
What is a joint capsule?
Seals the joint space and provides passive stability by limiting range of movement
What does synovial fluid do?
Provides food, oxygen and lubrication to the cartilage
What bone acts as a lever for the biceps?
Radius
What bone acts as a lever for the triceps?
Ulna
