Skeletal System :

A set of flashcards reviewing key concepts and definitions from the lecture on the skeletal system and joints.

What are the three classifications of joints based on mobility?

Synarthrosis (immovable), Amphiarthrosis (slightly movable), Diarthrosis (freely movable).

What type of connective tissue primarily connects fibrous joints?

Dense irregular connective tissue.

What is the primary function of the synovial fluid?

To reduce friction between articulating surfaces and provide shock absorption.

What type of cartilage composes the articular cartilage in synovial joints?

Hyaline cartilage.

How many types of fibrous joints are there and what are they called?

Three types: Sutures, Syndesmoses, and Gomphoses.

What distinguishes synovial joints from fibrous and cartilaginous joints?

Synovial joints have a synovial cavity that allows for greater mobility.

In the context of joints, what does the term kinesiology refer to?

The study of movement at joints.

What role do ligaments play in joint stability?

Ligaments connect bone to bone and provide most of the stability in synovial joints.

What are two types of cartilaginous joints and how do they differ?

Synchondroses (held by hyaline cartilage, immovable) and Symphyses (held by fibrocartilage, slightly movable).

What is the relationship between mobility and stability in joints?

They are inversely related; more mobility generally means less stability.

What is the main purpose of bursa in joints?

To reduce friction between bones and soft tissue structures.

What is the difference between extrinsic and intrinsic ligaments?

Extrinsic ligaments are located outside the joint capsule, while intrinsic ligaments are thickenings inside the joint capsule.

What is the role of articular discs in joints?

To modify the shape of joint surfaces, allowing bones to fit better and providing stability.

How does exercise affect synovial fluid production?

It stimulates the production of synovial fluid, enhancing joint protection.

What are tendon sheaths?

Tube-like structures that surround tendons and reduce friction during movement.

What is the dominant fiber type in dense irregular connective tissue?

Collagen fibers.

What happens to the synovial fluid if blood is present in it during an arthrogram?

It usually indicates an injury, such as a torn ligament.

What aspect of ligaments contributes to the healing time after injury?

Their relatively poor blood supply makes healing slow.