define joint
adjacent bones or bone and cartilage come together to form connection (articulations)
function of joint
allow for stability by holding skeleton together
allow movement by muscles pull on bones across joints
structural classification of joints is also called as
construction of joints
define fibrous joints
-bones joined by fibrous CT with little/no movement
define cartilaginous joint
-bones joined by hyaline or fibrocartilage
define synovial joint
-bones separated by synovial cavity and allows free movement
example of fibrous joints
-sutures (between skull bones)
-syndesmoses (connected by thick dense fibrous sheet)
-gomphoses (tooth anchored to jaw)
example of synovial joints
-planar, hinge, saddle, ball-and-socket
what does synovial joints form?
-joint cavity/spinal cavity
what does synvoial joints contain?
joint cavity
function of spinal fluid/fluid filled space
-allows bone to move smoothly, deliver nutrients and waste removal
what is articular artilage made up of?
hyaline cartilage
what does tendon attaches to?
muscle and bone
what are the accessory structures?
ligaments, bursae, tendons, and menisci
what is a ligament?
-connect bones
-fibrous CT
-dense regular CT
define bursae
-thin CT sac
-filled with lubricating fluid
define menisci
-fibrocartilage pads in knees
what does synovial joints have?
-hyaline
-synovial membrane
-synovial fluid
-ligaments
-bursae
-menisci
how does the joints move and give examples
function of ligaments
-stabilize joints
function of bursae
-reduces friction
function of menisci
-cushioning
-stability
-shock absorption
types of synovial joints (from least to most movement)
-plane
-hinge
-pivot
-ellipsoid
-saddle
-ball and socket