Types of Joints Definition The site where two

Types of Joints Definition: The site where two or more bones meet. Immovable - Fibrous joints • skull • tibia/fibula

Types of Joints Immovable - Cartilaginous joints • Rib cage • Intervertebral discs

Types of Joints Movable - Synovial Joints • Most joints in the body, including all joints of the limbs Characteristics: • Articular cartilage • Joint cavity/capsule • Synovial fluid • Ligaments • Tendons

Joint Tissues Cartilage 1. Three Types • Hyaline • Elastic • Fibrocartilage 2. Functions • Provides support • Shock absorbance • Provides flexibility • Smooth movement

Joint Tissues Cartilage

Tissue Types – Hyaline Cartilage Functions ü Provides soft and smooth covering to end of bone (articular surface) ü Helps provide smooth and easy movement between bones (at joints) ü Provides the starting material for new bone growth Structure ü Matrix is spongy (like jello) and evenly distributed between the cells ü Cells (chrondocytes) are found in pairs within capsules called lacunae Hyaline Cartilage

Tissue Types - Fibrocartilage Functions ü Shock absorber for structures subjected to pressure (meniscus, intervertebral discs) Structure ü Tough tissue with matrix of many collagenous fibers Fibrocartilage

Joint Tissues Ligaments and Tendons – Dense Connective Tissue

Tissue Types Dense Connective Tissue Functions ü Ligament- bone to bone connection, stops abnormal movement ü Tendon – bone to muscle connection, creates normal movement Structure ü Tough tissue with matrix of many collagenous fibers and a fine network of elastic fibers Dense Connective Tissue

Joints Anatomy and Physiology Lab Fetal Pig Joint