Arthrology and Joints Quiz

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Questions and Answers

Which of the following is an example of a synovial joint?

Symphysis

Gomphosis

Shoulder joint (correct)

Suture

What type of joint movement is characterized by the bending and straightening of a limb?

Circumduction

Abduction

Flexion (correct)

Rotation

Which classification describes a joint that allows movement around a single axis?

Multiaxial

Synarthrosis

Biaxial

Uniaxial (correct)

Which type of movement occurs when a limb moves away from the midline of the body?

Abduction Signup and view all the answers

What type of synovial joint allows movement in two different planes?

Saddle joint Signup and view all the answers

Which of the following joints demonstrates multiaxial movement?

Shoulder joint Signup and view all the answers

Which of the following describes a joint that does not allow any movement?

Synarthrosis Signup and view all the answers

Which of the following joints allows for a rotational movement?

Ball-and-socket joint Signup and view all the answers

Which of the following joints allows for rotation as its primary movement?

Proximal radioulnar joint Signup and view all the answers

Which type of synovial joint is characterized by a concave surface fitting into a convex surface, allowing for multiple movements?

Ball-and-Socket Joint Signup and view all the answers

What movement type decreases the angle between two adjacent bones?

Flexion Signup and view all the answers

Which joint movement is associated with the action of raising the foot upwards towards the shin?

Dorsiflexion Signup and view all the answers

Which type of joint allows movement in two planes?

Condylar Joint Signup and view all the answers

Which action would best be described as moving a body part away from the midline?

Abduction Signup and view all the answers

What type of synovial joint is primarily responsible for gliding movements?

Plane Joint Signup and view all the answers

Which of the following is NOT a characteristic of uniaxial joints?

Facilitate multiple axes of movement Signup and view all the answers

Which of the following is NOT a classification of synovial joints?

Ballistic joints Signup and view all the answers

What type of synovial joint allows movement in only one plane or axis?

Uniaxial Signup and view all the answers

Which type of movement is associated with condylar joints?

Abduction and adduction Signup and view all the answers

What is the primary function of bursae in synovial joints?

To reduce friction Signup and view all the answers

Which of the following can experience multiaxial movements?

Ball-and-socket joints Signup and view all the answers

The elongated bursae around tendons are referred to as what?

Tendon sheaths Signup and view all the answers

Which of the following describes the movement at a hinge joint?

Back-and-forth movement Signup and view all the answers

In terms of joint movement, a wave-like motion is most likely a characteristic of which type of joint?

Plane joint Signup and view all the answers

Study Notes

Articulations (Joints)

Joints are the points of contact between bones, cartilage, or teeth.
The study of joints is called arthrology
Joints have varying degrees of stability and mobility
More mobility means less stability, and more stability means less mobility

Classifications of Joints

Classified by structure: Fibrous, Cartilaginous, Synovial
Classified by function:
- Synarthrosis: immobile joint
- Amphiarthrosis: slightly movable joint
- Diarthrosis: freely moveable joint

Fibrous Joints

Bones are held together by dense connective tissue
No joint cavity
Types:
- Suture: Synarthrosis, joint between skull bones
- Syndesmosis: Amphiarthrosis, joint between parallel bones (radius and ulna, tibia and fibula)
- Gomphosis: Joint between the tooth root and alveolar bone (alveolar socket) of the jaw

Synovial Joint

A typical synovial joint includes:
- Articular cartilage that covers the ends of bones
- Synovial membrane on the inside of the joint capsule
- Joint cavity containing synovial fluid
- Ligaments that provide support and limit movement

Accessory Structures of Synovial Joints

Bursa: Sacs outside most synovial joints
- Contains synovial fluid and reduces friction
- Found where ligaments, muscles, tendons and/or bones rub
Tendon Sheaths: Elongated bursae around tendons
- Found where tendons rub together in confined areas (wrist and ankle)
Fat Pads: Provide padding and protection within the joint

Classification of Synovial Joints

Classified by the shape of the articular surface and type of movement
Types:
- Plane joint (uniaxial)
- Hinge joint (uniaxial)
- Pivot joint (uniaxial)
- Condylar joint (biaxial)
- Saddle joint (biaxial)
- Ball-and-socket joint (multiaxial)

Movements of Synovial Joints

Four types:
- Gliding motion: Articular surface slides back and forth or side-to-side (no angle change)
- Angular Motion: Increases or decreases the angle between bones
  - Flexion, extension, hyperextension, lateral flexion, abduction, adduction, circumduction
- Rotational Motion: A bone turns on it's longitudinal axis: Lateral rotation, medial rotation, pronation, supination
- Special movements: Occur only at specific joints
  - Depression vs. elevation, dorsiflexion vs.plantar flexion, inversion vs. eversion, protraction vs.

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Description

Test your knowledge of articulations and joints with this quiz focusing on their classifications, structures, and functions. Explore the intricacies of fibrous and synovial joints, along with their stability and mobility characteristics.