joints Flashcards
Immovable joints
synarthrotic
Slightly movable
amphiarthrotic
Freely movable
diarthrotic
how are joints grouped?
Three general groups of joints classified structurally by the type of tissue that binds the bones together are: fibrous, cartilaginous, and synovial.
Joints can also be grouped according to the degree of movement possible at the bony junctions.
bound by a sheet of fibrous connective tissue or bundle of fibrous connective tissue
syndesmosis
example of syndesmosis
tibia and fibula
sutures are synarthrotic, meaning they are
immovable
a joint formed by the union of a cone-shaped bony process in a bony socket.
gomphosis
bands of hyaline cartilage unite the bones
synchondrosis
the articular surfaces of bones are covered with a thin layer of hyaline cartilage and the cartilage is attached to a pad of springy fibrocartilage.
symphysis
allow free movement
synovial joints
what is the synovial membrane composed of
shiny, vascular layer of loose connective tissue
discs of fibrocartilage
menisci
fluid filled sacs
bursae
location of the bursae
located between the skin and underlying bony prominences.
function of bursae
function to cushion and aid the movement of tendons that glide over bony parts or over other tendons.
bone with a globular head that articulates with a cup-shaped cavity of another bone.
ball and socket
plane joint
nearly flat or slightly curved.
convex surface of one bone fitting into the concave surface of another bone.
hinge
cylindrical surface of one bone rotating within a ring formed of bone and a ligament
pivot joint
convex surface of one bone articulating with a concave surface of another bone.
saddle joint
why is the shoulder prone to dislocation?
The shoulder joint capsule is very loose
wide range of motion
loose attachments
