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Flashcards in Joints Deck (21)
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1
Q

Joints/Articulations

A

Contact between bones, cartilage and bone, or teeth and bone

2
Q

Types of join classifications

A

Structural and functional

3
Q

Structural classification

A

Based on anatomical organization if the joint

4
Q

Functional classification

A

Based on range of motion of the joint

5
Q

Structural Classification of Joints

A

Fibrous, Cartilaginous, Bony, Synovial

6
Q

Fibrous

A

Bones held together by fibrous CT tightly - no joint cavity

7
Q

Cartilaginous

A

Bones held together by cartilage - No joint activity

8
Q

Bony

A

Two bones fused by issues tissue and the boundary between them disappears

9
Q

Synovial

A
  • Joint cavity - separates bones and is surrounded by an articular capsule
  • Accessory ligaments found around many capsules
  • Freely movable joints
10
Q

Functional Classification of Joints

A

Synarthroses - immovable joints

Amphiarthroses - slightly moveable joints

Diathroses - Freely moveable joints (all synovial)

11
Q

Synarthroses

A

Suture

Gomphosis

Synchondrosis

Synostosis

12
Q

Suture

A

Bones are bound by dense connective tissue (only skull bones)

13
Q

Gomphosis

A

Bound by periodontal ligaments (binds teeth to sockets)

14
Q

Synchondrosis

A

Bound by rigid cartilaginous bridge (epiphyseal cartilage of longe bones; between vertebrosternal ribs and sternum)

15
Q

Synostosis

A

Two bones completely fused (epiphyseal lines of long bones)

16
Q

Amphiarthrosis

A

Syndesmosis

Symphysis

17
Q

Syndesmosis

A

Boned connected by a ligament -allows some flexibility or movement (distal articulations of the tibia and fibula)

18
Q

Symphysis

A

Bone connected by fibrocartilage (intervertebral disks & pubic symphysis)

19
Q

Diathrosis

A

Most common in adults

Bony surfaces
•enclosed within joint (articular) capsule
•covered by articular cartilage
•lubricated by synovial fluid

Movement limited only by ligaments, tendons, muscles, and shape of articulating bones

20
Q

Structure of synovial/diathrosis join

A

Join Capsule
•Dense irregular CT attach periosteum, provides resistance to dislocation

Articular Cartilages
•Pad articulation surfaces within
•Prevent bones from touching
•Smooth surfaves lubricated by synovial. fluid reduce friction

Synovial Membrane
Fibroblasts of the synovial membrane secret synovial fluid that contained slippery proteoglycans

Synovial fluid
•The consistency of egg yolk

21
Q

Functions of synovial fluid

A
  1. Lubrication
  2. Nutrient distribution
  3. Shock absorption