Human Anatomy and Physiology: Articulations

Practice flashcards for key concepts in Human Anatomy and Physiology regarding articulations.

What are the main functions of joints (articulations)?

Connect two bones, enable movement, provide stability, and allow long bones to lengthen.

What is the definition of Synarthrosis in the context of joint classification?

A type of joint with no movement between articulating bones, providing the most stability.

What distinguishes Diarthrosis joints?

Diarthrosis joints are freely moveable and allow for a wide variety of specific movements.

What are fibrous joints and their functional classifications?

Joints united by dense regular collagenous connective tissue, functionally categorized as synarthroses or amphiarthroses.

What are Syndesmoses in fibrous joints?

Joints where articulating bones are joined by an interosseous membrane or ligament, allowing limited movement.

What characterizes Cartilaginous joints?

They lack a joint cavity and allow little if any motion; includes synchondroses and symphyses.

What is the purpose of synovial fluid?

To lubricate joints, supply nutrients, and absorb shocks during joint movement.

What is the primary difference between the elbow and knee joints?

The knee is the largest diarthrosis in the body and allows for some degree of rotation, while the elbow is a simple hinge joint.

What is bursitis?

Inflammation of a bursa, commonly caused by trauma or repetitive movements, leading to pain and swelling.

What is the Unhappy Triad injury?

A knee injury that typically involves a rupture of the tibial collateral ligament, lateral meniscus, and anterior cruciate ligament.

What types of movements characterize synovial joints?

Gliding movements, angular movements (like flexion and extension), rotation, and special movements (like opposition and elevation).

What are the two types of hip joint replacements?

Total hip replacement, which replaces both the head of the femur and the acetabulum, and partial hip replacement, which only replaces the head of the femur.