Presentation on theme: "Essentials of Human Anatomy The Skeletal System 2"— Presentation transcript:
1 Essentials of Human Anatomy The Skeletal System 2
2 JointsIt is the site where two or more bones come together, where there is movement or not.
3 Function Holds bones together Allows bones to move All bones articulate except the hyoid
4 Classification of Joints Fibrous JointsDense connective tissues connect bones between bones in close contactCartilaginous JointsHyaline cartilage or fibrocartilage connect bonesSynovial JointsMost complex allow free movementSynarthroticimmovableAmphiarthroticslightly movableDiarthroticfreely movable
5 FIBROUS JOINTS The articulating surfaces are joined by fibrous tissue. Very little movement is possible.E.G :Sutures of the vault of the skull.Inferior tibiofibular joints.Tooth in jawbone
6 CARTILAGENOUS JOINTS A. Primary Cartilagenous The bones are united by a plate of hyaline cartilage.E.G :Between the Epiphysis and Diaphysis of a growing bone.Between the first rib and the sternum.
7 CARTILAGENOUS JOINTS B. Secondary Cartilagenous The bones are united by a plate of fibrocartilage.Their articulating surfaces are covered by a thin plate of hyaline cartilage.E.G :joints between the vertebral bodies.Symphysis pubis.
8 SYNOVIAL JOINT It has a great degree of freedom of movement. The articulating bones are covered by hyaline cartilage and separated by a joint cavity.The cavity is lined by synovial membrane.It is protected on the outside by a tough fibrous capsule.The synovial membrane produces a lubricating fluid (synovial fluid)
9 General Anatomy of Synovial Joints Basic features:articular capsulejoint cavitysynovial fluidarticular cartilageligamentsnervesblood vessels
10 Types of Synovial Joints From least movable to most freely movable, the six specific types of synovial joints are:planar (gliding) jointshinge jointspivot jointscondyloid (ellipsoid) jointssaddle jointsball-and-socket joints
11 Types of Synovial Joints Ball-and-Socket JointhipshoulderCondyloid Jointbetween metacarpals and phalanges