Joints Classification Quiz

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Questions and Answers

What type of cartilage holds the bones together in a secondary cartilaginous joint?

Articular cartilage

Elastic cartilage

Fibrocartilage (correct)

Hyaline cartilage

Which joint is NOT an example of a synovial joint?

Hinge joint

Pivot joint

Pubic symphysis (correct)

Saddle joint

Which part of a synovial joint secretes synovial fluid?

Synovial fluid

Synovial membrane (correct)

Capsule

Articular cartilage

What is the primary role of ligaments in the synovial joint?

Holding bones together Signup and view all the answers

Which type of synovial joint allows movement in one plane?

Hinge joint Signup and view all the answers

What characterizes synovial fluid?

Colorless and viscous Signup and view all the answers

In which part of a synovial joint does articulation occur?

Articular cartilage Signup and view all the answers

Which statement about uniaxial synovial joints is incorrect?

They include condyloid joints. Signup and view all the answers

What type of movement do multi-axial synovial joints allow?

Movement in all three planes Signup and view all the answers

Which type of joint is characterized by a hinge configuration allowing movement on one axis?

Hinge joint Signup and view all the answers

Which joint example represents a pivot joint?

Median atlantoaxial joint Signup and view all the answers

What is the main feature of bi-axial synovial joints?

Enable motion in two planes Signup and view all the answers

In which joint type does one surface fit into a concavity of another surface?

Ball and socket joint Signup and view all the answers

Which of the following joints is a plane joint, allowing only slight gliding movements?

Intercarpal joint Signup and view all the answers

What is the main characteristic that defines a fibrous joint?

Bones are connected via fibrous tissue. Signup and view all the answers

What is the shape of the articular surfaces in a saddle joint?

Partly convex and partly concave Signup and view all the answers

Which type of joint allows for the least movement?

Sutures Signup and view all the answers

Which joint is an example of a condyloid joint?

Metacarpophalangeal joint of the finger Signup and view all the answers

Synchondrosis is an example of which type of joint classification?

Cartilaginous Joint Signup and view all the answers

Which joint type is characterized by the connection of tooth roots to their sockets?

Gomphosis Signup and view all the answers

Which example illustrates a cartilaginous joint?

Epiphyseal plate Signup and view all the answers

What type of joint is formed when bones are held closely together with minimal connective tissue?

Suture Signup and view all the answers

How are synovial joints primarily characterized?

Presence of synovial fluid and a wide range of motion Signup and view all the answers

What is a common feature of cartilaginous joints?

They are joined by intervening cartilage. Signup and view all the answers

Which factor is NOT involved in stabilizing a joint?

Nervous factor Signup and view all the answers

What limits the extension of the knee joint?

Tension in the ligaments Signup and view all the answers

Which joint type features a central bony pivot surrounded by a bony-ligamentous ring?

Pivot joint Signup and view all the answers

How does increased compression between opposing articular surfaces affect joint movement?

It limits joint movement Signup and view all the answers

Which type of joints have two distinct convex surfaces articulating with two concave surfaces?

Condyloid joints Signup and view all the answers

Study Notes

Joints

Joints, or articulations, are where two or more bones meet.
Joints are classified based on the connecting material and movement type.
Fibrous Joints: Connected by fibrous tissue with varying degrees of movement.
- Syndesmosis: Bones joined by fibrous connective tissue.
  - Examples: Inferior tibiofibular joint, interosseous membrane between radius/ulna, tibia/fibula.
- Sutures: Bones close together with minimal fibrous tissue.
  - Example: Joints between cranial bones.
- Gomphosis: Connects the root of a tooth to its socket.
Cartilaginous Joints: Bones joined by cartilage with limited movement.
- Primary (Synchondrosis): Bones joined by hyaline cartilage.
  - Example: Epiphyseal plate in long bones.
- Secondary (Symphysis): Bones joined by fibrocartilage.
  - Examples: Pubic symphysis, intervertebral discs, manubriosternal joint.
Synovial Joints: Allow various body movements.
- Typical Synovial Joint Structure:
  - Bony articular ends, usually large and smooth.
  - Articular cartilages: Hyaline cartilage on bone contact points, reducing friction.
  - Synovial membrane: Lines the capsule, secreting synovial fluid.
  - Synovial space: Allows movement within the capsule.
  - Synovial fluid: Lubricates the articulation.
  - Capsule: A sleeve of fibrous connective tissue surrounding the articulation.
  - Ligaments: Hold bones together, prevent movement, and stabilize.
  - Muscles: Apply forces for movement.
Synovial Joint Classification: Based on shape of articular surfaces or movement types.
- Uniaxial: Movement in one plane.
  - Plane Joints: Flat surfaces, allow slight gliding.
    - Examples: Intercarpal, intertarsal, sternoclavicular, acromioclavicular joints.
  - Hinge Joints: Allow motion on one axis.
    - Examples: Interphalangeal joints, elbow, ankle joints.
  - Pivot Joint: One bone acts as an axis, another rotates around it.
    - Examples: Proximal radioulnar joint (circle around axis), median atlantoaxial joint (axis rotates within circle).
- Bi-Axial: Movement in two planes.
  - Condyloid Joints: Proximal phalanx of a finger, allows flex/extend and side-to-side movement on the metacarpal head.
  - Ellipsoid Joints: Elliptical convex carpal surface articulates with concave radius in the wrist joint (radiocarpal).
  - Saddle Joints: One surface is convex/concave, the other is reciprocally concave/convex.
    - Example: Carpometacarpal joint of the thumb.
- Multi-Axial: Movements in all three planes.
  - Ball and Socket Joints: Spherical head fits into a socket.
    - Example: Hip joint (femur head into acetabulum).
Joint Stability Factors:
- Bony: Shape of articulating surfaces.
- Ligamentous: Strength of capsule and ligaments.
- Muscular: Surrounding muscles.
- Intra-articular pressure.
Factors Limiting Joint Movement:
- Ligament tension.
- Antagonistic muscle contraction.
- Compression between articular surfaces.
- Approximation of soft tissues.

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Description

Test your knowledge on the different types of joints in the human body, including fibrous, cartilaginous, and synovial joints. This quiz will also cover specific examples and classifications of each type, enhancing your understanding of articulations and their functions.