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Joints Articulations Where 2 or more bones connect

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Page 1: Joints Articulations Where 2 or more bones connect

Joints

Articulations

Where 2 or more bones

connect

Page 2: Joints Articulations Where 2 or more bones connect

Reason for Joints

Connect bonesoProvide SupportoMake them secure

Allow for movement in most cases

Hyoid only bone that doesn’t connect with another boneoAnchors tongue

Page 3: Joints Articulations Where 2 or more bones connect

3 Types of JointsClassified by how

much movement they allow

Page 4: Joints Articulations Where 2 or more bones connect

SynarthrosesConnective fibers

grow between the bones

Structurally Strong

Suture Line “show” jointo Skullo Pelvis

Fibrous Jointso Tib / Fibo Radius / Ulna

Teeth

No Movement

Page 5: Joints Articulations Where 2 or more bones connect

Skull Suture Joint Development

Page 6: Joints Articulations Where 2 or more bones connect
Page 7: Joints Articulations Where 2 or more bones connect

AmphiarthrosesCartilage Disc

connects the bonesCarry a lot of weightSymphysis pubis

jointVertebral joints

o Allows for varied movement

o Absorb forceo Discs filled with a gel

Ribs to Sternum

Slight Movement

Page 8: Joints Articulations Where 2 or more bones connect
Page 9: Joints Articulations Where 2 or more bones connect

Diarthroses

Capable of many types of MovementsoSome just one movement (two directions)

• Knee - 2oSome joints capable of many directions

• Elbow - 4• Ankle – 6• Wrist – 7

Synovial Joints

Free Movement

Page 10: Joints Articulations Where 2 or more bones connect

Structure of Synovial Joints

Joint Capsuleo Fits over the ends of two

bones like a sleeve

Ligamentso Connect two bones

together

Articular Cartilageo Cushion bone endso reduce friction

Synovial membraneo Lubricating fluid

Page 11: Joints Articulations Where 2 or more bones connect
Page 12: Joints Articulations Where 2 or more bones connect
Page 13: Joints Articulations Where 2 or more bones connect

Types of Diarthroses

Ball and Socketo Shoulder & Hip

Hingeo Elbow & Fingers

Pivoto Atlas/Axis (C1 & C2)o Radius/Ulna

Page 14: Joints Articulations Where 2 or more bones connect

Types of Diarthroses

Saddleo Carpometacarpal

joint of the thumb

Glidingo Superior & inferior

articulating surfaces of vertebrae

Ellipsoid / Condyloido Wrist

Page 15: Joints Articulations Where 2 or more bones connect

Name That Joint

Page 16: Joints Articulations Where 2 or more bones connect

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