Diarthroses

Question 1

What is diarthroses?

Answer 1

freely moveable, full ROM

Question 2

What are characteristics of Synovial Joint?

Answer 2

-Only type of diarthrotic joint
-FULL ROM
-Located at ends of articulating bones
-Special features like: articular capsule/synovial fluid

Question 3

What are the synovial joint’s special structures?

Answer 3

1.) Joint Capsule
2.) Synovial Fluid
3.) Joint Cavity
4.) Articular Cartilage
5.) Accessory structures

Question 4

What makes up the joint capsule (articular capsule)?

Answer 4

1.) Fibrous capsule outside
2.) Synovial membrane inside (makes synovial fluid)

Question 5

What makes up the accessory structures of the synovial joint?

Answer 5

1.) Menisci
2.)Fat pads
3.) Bursae
4.) Ligaments

Question 6

What are properties of the synovial joint?

Answer 6

-Wide ROM
-Contains synovial fluid in a capsule & special structures
-Composed of mixed ingredients (fiber, cartilage, bones)
-Found between fingers, toes, ankles, wrists, knees, elbows etc.

Question 7

What are the function of Articular Cartilage?

Answer 7

-Covering at the end of two articualting bones
-Resembles hyaline (smooth, brittle, heals poorly) but has more water
-Reduces friction during movement (by synovial fluid)
-Damage to cartilage can result in Osteoarthritis (MC)
PAIN DUE TO FRICTION

Question 8

What is synovial fluid?

Answer 8

Egg yolk consistency (tough, viscous)
-plasma filtrate with HYALURONIC ACID and secreted by fibroblast in SYNOVIAL MEMBRANE

Question 9

What are the functions of synovial fluid?

Answer 9

1.) Lubricate
2.) Nutrient Distribution
3.) Shock Absorption

Question 10

When you have low viscosity, your synovial fluid will be what?

Answer 10

Thin

Question 11

If you have a high viscosity, your synovial membrane will be what?

Answer 11

Thick