Synovial Joints What are synovial joints Freely movable joints Contain a cavity filled with thick slippery fluid Synovial fluid Found mostly in articulations of the appendicular skeleton ID: 912250
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Slide1
Diarthrotic Articulations
Synovial Joints
Slide2What are synovial joints?
Freely movable joints
Contain a cavity filled with thick, slippery fluid (Synovial fluid)
Found mostly in articulations of the appendicular skeleton
Slide3Articular Cartilage
Covers the ends of bones
Made of hyaline cartilage
Reduces friction between bones
Cartilage wearing away causes pain and restricted motion
Slide4Types of synovial joints:
Gliding (plane)
Pivot
HingeBall and socketElipsoid (Condyloid)
Saddle
Slide5Gliding or Plane joints:Formed between 2 opposing flat surfaces
Bones slide over each other
Slide6Pivot Joints:
Rotation around an axis
Slide7Hinge Joints:
Part of one bone fits into a convex cavity in another bone.
Motion is in one plane, back and forth
Slide8Ball-and-Socket Joint
A round projection on one bone (head) fits into a depression (socket) on another bone.
Allows a wide range of motion
Easy to dislocate
Slide9Ellipsoid (Condyloid) Joints:
Modified ball and socket joints in which the head of a bone is similar in shape to a football
Moves in two axes, but restricts rotational motion
Slide10Saddle JointsMade by 2 saddle-shaped surfaces at right angles to each other
Slide11The articulation of 3 bones
The Knee Joint
Slide12Bursa/e – Sacs filled with synovial fluid for cushioning
ACL and PCL – Ligaments that connects the tibia to the femur
Meniscus – crescent-shaped
fibrocartilage
pads that help cushion joints
Slide13The Knee
A modified hinge joint
Allows flexion, extension, and limited rotation
Slide14Slide15Slide16Knee dislocation –
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Slide17Slide18Examination of the knee joint
Chicken Leg Dissection
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