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Chapter Online Tutorial Notes

9808 Chapter Notes - Chapter Online Tutorial Notes: Humerus, Carpometacarpal Joint, Articular Processes

7 pages53 viewsFall 2018

University of Canberra
Course Code
Julie Cooke
Online Tutorial Notes

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Joints Online Tutorial
Any point in the skeleton where two bones meet is called a joint (articulation). Joints are
usually named according to the bones that are involved in that joint. E.g. tibiofemoral joint
is where the tibia and femur meet.
There are a few different ways in which joints may be classified. They are classified by either
the structure of the joint or the function of the joint. The structure indicates the type of
tissue that connects the bones together and dictates the function of the joint.
Fibrous joints
Fibrous joints are also called synarthroses (syn= together, arthro= joint) and are bound
by collagen fibres. The adjacent bone margins are bound tightly together and no
appreciable movement is possible, therefore this type of joint is immovable.
There are 3 types of fibrous joints:
Sutures: joints between the bones of the skull. The edges of the skull bones have
interdigitations that fit firmly together.
Gomphoses: a joint between a tooth to its socket.
Syndesmoses: joint between two bones by long collagenous fibres. This type of joint is
often referred to as an 'interosseous membrane' (membrane between two bones)
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Cartilaginous joints are also called amphiarthroses (amphi= both sides, arthro=
joint) and are bound by cartilage. The adjacent bones are united by cartilage and
permit some movement.
There are 2 types of catilaginous joints:
Synchondroses: joint in which bones are bound by hyaline cartilage.
Symphyses: joint in which bones are bound by fibrocartilage
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