Quiz Ch. 8 1.What is one main functions of joints? 2.Name 2 parts of a synovial joint. 3.From what part of the joint capsule is synovial fluid secreted? 4.What are menisci? 5.What are two types of synovial joints?

Chapter 8: Joints of the Skeleton

Introduction Joints –1. –2. –Functions

Introduction Types of Joints (structural classification) –1. –2. –3. Synovial Joints –Diarthrotic, meaning… –Complex –Parts

General Structure of a Synovial Joint Articular cartilage –1. –2. –3. Joint capsule –1. –2. Two layers Outer- Inner-

Fig. 8.7

General Structure of a Synovial Joint Ligaments –1. –2. –3. Synovial Membrane –1. –2. –3.

General Structure of a Synovial Joint Synovial Fluid –1. –2. –3. –Can indicate joint health Bloody, with lipids- Clear- Cloudy, yellowish- Crystals- Cloudy, red tinged, pus-

Fig. 8.7

General Structure of a Synovial Joint Menisci –1. –2. –3. Bursae –1. –2. –3.

Fig. 8.8

Types of Synovial Joints Six major types –Ball and Socket –Condyloid –Gliding –Hinge –Pivot –Saddle Classified by shapes and movements

Fig. 8.9

Types of Joint Movements Muscles produce movements at synovial joints Muscle contracts –Pulls movable end (__________) toward immovable end (___________) –Movement occurs at joint

Types of Joint Movements Flexion Extension Abduction Adductions

Fig. 8.10

Clinical App. 8.2 : Joint Disorders Sprains –1. Bursitis –1. –2.

Arthritis –Inflammation of joint –_______ different types –Rheumatoid Arthritis (RA) –Osteoarthritis –Lyme Arthritis Clinical App. 8.2 : Joint Disorders

Fig. 8A

Life Span Changes Synovial Joints –Loss of function begins in ________ Progresses slowly –Synovial Fluid… –Joints lose …. –Range of motion, response time affected –Exercise…