Unit 1: Lecture 5 Flashcards Preview

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Flashcards in Unit 1: Lecture 5 Deck (14):
1

Types of joints (3)

Fibrous, cartilaginous, synovial

2

Joint cavity

- contains synovial fluid produced by the synovial membrane
- ends of bones articulate

3

Joint (articular) capsule

Thick, tough, pliable membrane

4

Suture

- bones of the skull (called fontanelles at birth)
- separated by fibrous tissue
- complete fusion (synostosis) begins in early 20's and continues until old age

5

Syndesmosis

- opposed bones joined by intervening fibrous tissue
- e.g. parallel attachment of the radius and ulna

6

Synchondrosis

- temporary and eventually converted to bone
- eg. epiphyseal plates

7

Symphysis

- result from elastic and fibrous tissue forming a compressible disk
- eg. intervertebral disks

8

Plane joint

- gliding movement is produced
- eg. intercarpal, carpometacarpal joints

9

Hinge joint

- uniaxial (allow movement in one plane)
- eg. humeroulnar (elbow) joint

10

Pivot joint

- allows rotation around a longitudinal axis
- eg. atlantoaxial joint (between C1 and C2)

11

Condyloid joint

- multiaxial, allow components to move in 2 directions at right angles to each other
- eg. metacarpophalangeal joints

12

Saddle joint

- curvatures of articulating surfaces are at right angles to each other
- eg. 1st carpometacarpal joint of thumb
- allows thumb to be extended (moved laterally from the palm), flexed (moved toward the palm), and adducted/abducted (moved at right angles to the palm)

13

Ball and socket joint

- greatest freedom of movement (flexion/extension, abduction/adduction, internal/ external rotation, circumduction))
- eg. glenohumeral joint and hip joint

14

Synovial fluid

- which lubricates the joint
- has the consistency of egg white