Anatomy CH 9

What is the definition of a joint or articulation?

The meeting of rigid elements of the skeleton.

What Greek root word means 'joint'?

Arthro.

What is a fibrous joint?

A joint where the main material connecting the joint is fibrous material and they typically don't move or move a little.

What type of joint is characterized by the presence of a joint cavity?

Synovial joint.

What are the three functional classifications of joints based on movement?

Synarthrosis (immobile), Amphiarthrosis (slightly mobile), and Diarthrosis (freely mobile).

What type of joint allows no movement, typically found in the skull?

Synarthrosis.

What is the primary function of synovial fluid in joints?

To lubricate the joint and reduce friction.

What are the two main types of cartilaginous joints?

Synchondrosis and Symphysis.

What is an example of a synarthrotic joint?

The sutures of the skull.

What type of joint is the knee classified as?

Primarily a hinge joint.

What are the four ligaments that provide stability to the knee joint?

Anterior cruciate ligament (ACL), Posterior cruciate ligament (PCL), Fibular collateral ligament (LCL), and Tibial collateral ligament (MCL).

What is the unhappy triad injury in the knee?

Injury involving a torn ACL, torn tibial collateral ligament, and torn medial meniscus.

What type of joint is the glenohumeral joint also known as?

Shoulder joint.

What are the rotator cuff muscles responsible for?

Providing stability to the shoulder joint.

What type of joint movement is defined as decreasing the angle between articulating bones?

Flexion.

What is the condition called when the joint is moved out of place?

Dislocation or luxation.

What is arthritis generally defined as?

Inflammation of the joints.

Which type of arthritis is characterized as an autoimmune disease?

Rheumatoid arthritis.

What are bursitis and tendonitis?

Inflammation of the bursa or tendons, respectively.

What role do proprioceptors play in joint stability?

They detect body position and help maintain joint stability.

What is the definition of a ligament?

Connective tissue that connects bones to other bones.