Articulations Flashcards
What are fibrous joints?
Dense regular CT
No joint cavity
What are cartilaginous joints?
Cartilage binds the bone
No joint cavity
What are synovial joints?
Ligaments support articulating bones
separated by joint cavity
What is synarthrosis?
immovable joint
What is amphiarthrosis?
Slightly moveable
What is diarthrosis?
freely moveable joints
What are the three main types of fibrous joints?
Suture
Syndesmosis
Gomphosis
What is a suture?
Synarthrosis joint
Coronal, Lambdoid, Sagital
What is a syndesmosis joint?
2 bones held together by interosseous ligamnets
Amphiarthrosis
b/w radius and ulna / tib and fib
What is a gomphosis joint?
The root of tooth and the jaw
Periodontal membranes
Synarthrosis
What is the articular capsule?
Surrounds bone ends
What is the synovial membrane?
Lines articular capsule
Makes synovial fluid
What is synovial fluid?
Lubricant for the joint
What is the joint cavity?
inside space of capsule
What is a plane synovial joint?
side-to-side movement
sliding against each other
carpals and tarsals
What is a hinge joint?
bending in only one plane
most common synovial joint
elbow, knee, PIP, DIP
What is a pivot joint?
Permits rotational movement
atlas-axis articulation
moving head side to side
What is a Conylar joint?
Biaxial movements
MP joints- knuckles when forming a fist
circumduction
What is a saddle joint?
wide range of movement
1st metacarpal joint- base of thumb
What is a ball and socket joint?
greatest range of motion
hip and shoulder joint
least stable
Flexion?
decreases joint angle
Dorsiflexion?
top of foot closer to the tibia
Plantarflexion?
Foot and toes move closer to the posterior leg
