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Synovial Joints Classification Quiz
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Synovial Joints Classification Quiz

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Questions and Answers

Define diarthrosis synovial.

Very movable joint with synovial fluid in between the bones.

What are the three different motions of diarthrosis synovial?

Uniaxial, biaxial, triaxial (multiaxial).

Define uniaxial joint.

Bone moves in just one plane or axis.

Define biaxial joint.

<p>Bone moves in two planes or axes.</p> Signup and view all the answers

All synovial joints are diarthroses.

<p>True</p> Signup and view all the answers

What are the four components of diarthrosis synovial joints?

<p>Articular capsule, articular cartilage, joint cavity, synovial fluid.</p> Signup and view all the answers

Define articular capsule.

<p>Joint capsule.</p> Signup and view all the answers

What is the function of articular capsules?

<p>Surround the synovial joints to keep the synovial fluid inside.</p> Signup and view all the answers

What are articular capsules made of?

<p>Dense irregular connective tissue.</p> Signup and view all the answers

Define joint cavity.

<p>A hollow space inside a joint.</p> Signup and view all the answers

What is the function of articular cartilage?

<p>Smooths surfaces of bones for joint movement.</p> Signup and view all the answers

What is articular cartilage made of?

<p>Hyaline cartilage.</p> Signup and view all the answers

Where does synovial fluid come from?

<p>Synovial membrane.</p> Signup and view all the answers

What are the functions of synovial fluid?

<p>Lubrication, nourishment (for chondrocytes), shock absorption.</p> Signup and view all the answers

What are the six types of synovial joints?

<p>Ball-&amp;-socket, condylar, hinge, pivot, plane, saddle.</p> Signup and view all the answers

Define plane joint.

<p>A synovial joint with flat articular surfaces that produces a gliding movement.</p> Signup and view all the answers

Plane joint: uniaxial, biaxial, or multiaxial?

<p>Uni-axial.</p> Signup and view all the answers

What are two examples of a plane joint?

<p>Intercarpal joints and intertarsal joints.</p> Signup and view all the answers

Define hinge joint.

<p>A synovial joint in which a convex surface of one bone fits into a concave depression of the other bone.</p> Signup and view all the answers

Hinge joint: uniaxial, biaxial, or multiaxial?

<p>Uni-axial.</p> Signup and view all the answers

What are two examples of hinge joints?

<p>Elbow and knee.</p> Signup and view all the answers

Define pivot joint.

<p>A synovial joint in which the first bone rotates around the second bone.</p> Signup and view all the answers

Pivot joint: uniaxial, biaxial, or multiaxial?

<p>Uni-axial.</p> Signup and view all the answers

What are two examples of a pivot joint?

<p>Atlantoaxial joint and radioulnar joint.</p> Signup and view all the answers

Define condylar joint.

<p>A synovial joint in which the oval shape of one bone fits into an oval depression of the other bone.</p> Signup and view all the answers

Condylar joint: uniaxial, biaxial, or multiaxial?

<p>Biaxial.</p> Signup and view all the answers

What is an example of a condylar joint?

<p>Metacarpophalangeal joint.</p> Signup and view all the answers

Define saddle joint.

<p>A synovial joint in which the articular surfaces of the bones fit like a saddle.</p> Signup and view all the answers

Saddle joint: uniaxial, biaxial, or multiaxial?

<p>Biaxial.</p> Signup and view all the answers

What is an example of a saddle joint?

<p>Carpometacarpal joint of thumb.</p> Signup and view all the answers

Define ball-&-socket joint.

<p>A synovial joint in which the spherical head of one bone fits into a cuplike socket of another bone.</p> Signup and view all the answers

Ball-&-socket joint: uniaxial, biaxial, or multiaxial?

<p>Multiaxial.</p> Signup and view all the answers

What are two examples of ball-&-socket joints?

<p>Shoulder and hip.</p> Signup and view all the answers

Study Notes

Synovial Joint Classification

  • Diarthrosis synovial joints are highly mobile, characterized by the presence of synovial fluid between bones.
  • They allow for diverse movement types: uniaxial, biaxial, and triaxial (multiaxial) motions.
  • All synovial joints fall under the diarthrosis category, confirming their high mobility.

Joint Types and Movements

  • Uniaxial Joints: Bones move in a single plane or axis. Examples include hinge and pivot joints.
  • Biaxial Joints: Bones move in two planes or axes. Condylar and saddle joints fall into this category.
  • Multiaxial Joints: Bones can move in multiple planes. The ball-and-socket joint is an example.

Components of Diarthrosis Synovial Joints

  • Articular Capsule: A joint capsule that encases synovial joints, retaining synovial fluid within.
  • Articular Cartilage: Smooth cartilage (hyaline) that covers bone surfaces to facilitate joint movement.
  • Joint Cavity: A hollow space within a joint containing synovial fluid.
  • Synovial Fluid: Secreted by the synovial membrane, it serves to lubricate joints, nourish chondrocytes, and absorb shocks.

Specific Joint Definitions

  • Plane Joint: Features flat articular surfaces allowing gliding movements; classified as uniaxial; examples include intercarpal and intertarsal joints.
  • Hinge Joint: One bone's convex surface fits into the concave depression of another; also uniaxial; typical examples are the elbow and knee.
  • Pivot Joint: A joint allowing one bone to rotate around another; categorized as uniaxial; examples are the atlantoaxial joint and radioulnar joint.
  • Condylar Joint: An oval shape fits into a respective depression; classified as biaxial; the metacarpophalangeal joint exemplifies this joint type.
  • Saddle Joint: Articular surfaces that resemble a saddle; also biaxial; an example is the carpometacarpal joint of the thumb.
  • Ball-and-Socket Joint: Characterized by a spherical head fitting into a cup-like socket; classified as multiaxial; examples include the shoulder and hip joints.

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Description

Test your knowledge on the classification of synovial joints and their movements. This quiz covers diarthrosis joints, types of movements such as uniaxial, biaxial, and multiaxial, as well as the components that make up synovial joints. Ideal for students studying anatomy or physiology.

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