Joints Flashcards
(89 cards)
articulate
meet
arthro
root word for joint
fibrous joint
joints with no space. bones are connected by fibrous tissue. there is little or no movement
cartilaginous joint
joints with no space. bones are joined by cartilage. movement is limited or absent
synovial joint
joints with a space ( joint cavity) separating the ends of bones that is filled with synovial fluid. a wide range of movement is possible
joint capsule
surrounds and reinforces the joint. the inner layer of the joint capsule is lined by a synovial membrane
ligaments
a thick band of fibrous tissue extending from one bone to another at a joint
collateral ligaments
form part of the joint capsule that surrounds the joint. provide stability to the joint, helping prevent medial and lateral movement of the bones
intracapsular ligaments
ligaments located within the joint space. help provide stability and control the range of motion. in weight bearing joints they also aid in absorbing and distributing forces transmitted through the joint during walking, running, and jumping
articular cartilages
cover the ends of the bones. cushion the bone ends, protecting the effects of friction and compression
joint cavity
a joint space between the two bones and within the joint capsule
synovial membrane
lines the joint cavity and secretes a lubricating synovial fluid which coats the interior of the joint. carries oxygen and nutrients to cartilage and ligaments
menisci singular is meniscus
one or more fibrocartilagenous disc within the joint cavity. only some synovial joins have menisci. help increase the range of motion of the joint and act as shock absorbers, reducers from wear and tear
flexion
reduces the angle between two bones (bends the limb)
Adduction
the body part is moved towards the median plane of the body
extension
increases the angle between two bones (straightens the limb)
rotation
revolving the bone around its long axis
circumduction
movement of the end of a bone
plane/ gliding
the articular surfaces of the joint slide over one another
abduction
the body part is moved away from the median plane of the body
pivot
consists of a peg sitting within a ring that allows rotation
condylar
consists of a convex surface that sits in a corresponding concave surface. allows movement in two planes (flexion, extension, abduction, and adduction)
ball and socket
consists of a rounded end or ball, sitting within a socket or cup. allows a wide range of movement
hinge
allows movement in one plane only (flexion and extension)