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Flashcards in Joints And Articulations Deck (24):
0

Synarthrotic, bones of skull, fibrous

Sutures

1

Peg in socket
Synarthrotic
Periodontal ligament
Fibrous

Gomphoses

2

Bones connected by ligaments
Length of ligament determines mobility of the joint
Distal articulation of tibia and fibula (synarthrotic)

Syndesmoses

3

Fibrocartilage sandwiched between hyaline cartilage

Strong and flexible

Amphiarthrotic

Symphysis

Example, pubic symphysis and fibrocartilaginous intervertebral discs

4

Hyaline cartilage
Synarthrotic
Epiphyseal plates
First rib and manubrium

Synchondroses

5

General anatomy of joints

Articular cartilage

Joint synovial cavity - contains synovial fluid

Articular capsule - outer fibrous layer (DRCT)
Inner synovial membrane
Reinforcing ligaments
Nerves and blood vessels

6

Reinforcing ligaments

Capsular (intrinsic) thickened portions of the fibrous layer of the Articular capsule

Extra capsular
Intracapsular deep to capsule, not within

7

Synovial fluid

Weeping lubrication
Phagocytic cells
Thins and becomes less viscous with activity

8

Where are fatty pads?

Between fibrous layer and the synovial membrane or bone of Articular capsule

9

Meniscus

Articular discs
Wedges of Fibrocartilage
Improve the fit between articulating bone ends

10

Bursae

Flattened fibrous sacs lined with synovial membrane and contains a thin film of synovial fluid

11

Tendon sheath

Essentially an elongated bursa that wraps completely around a tendon bun in a hotdog
Common where several tendons are crowded together

12

Factors influencing stability of synovial joints

Shapes of Articular surfaces
Muscle tone
Number and positioning of ligaments

13

Flexion

Bending movement that decreases the angle and brings the articulating bones close together

14

Extension

Increases the angle between bones. Usually restores position in natural setting

15

Movements beyond anatomical position

Hyperextension

16

Abduction

Movement of a limb away from the midline

17

Adduction is bringing it back

Yep

18

Rotation

Turning a bone around it's own long axis

19

Supination and pronation

Hold the sup. pro it on the floor

Yep
Pronation moves the distal end of the radius across the ulna so the two bones form an X

20

Dorsiflexion and plantar Flexion

Dorsiflexion foot toward shin
Plantar Flexion ballet dancer

21

Inversion and eversion

Inversion sole faces medially

Eversion sole faces laterally

Foot movement

22

Protraction and retraction

Chicken head and mandible
Non angular anterior and posterior movements

23

Elevation and depression

Lifting or lowering
Scapula and mandible