A&P Ch.9

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1

Point of contact between two bones, between bone and cartilage or between bone and teeth

Joint

2

Describe Structural Classification

-amount of space between articulating bones
-type of connective tissue binding bones together

3

Describe the types of Structural Classification

Fibrous- fibrous connective tissue rich in collagen fibers; no synovial cavity
Cartilaginous- Cartilage; lack synovial cavity
Synovial Joint- dense irregular connective tissue composing articular capsule; synovial cavity

4

Describe Functional Classification

Classification by degree of movement

5

Describe the types of Functional Classification

Synarthrosis-immoveable
Amphiarthrosis- slightly moveable
Diarthrosis- freely moveable

6

-Fibrous Joint
-Synarthrosis
-dense fibrous connective tissue unites bones of the skull; have irregular, interlocking edges giving strength to joint

Sutures

7

-Fibrous Joint
-Amphiarthrosis
-greater distance between bones; connective tissue is bundled, ligament, or sheet; interosseus membrane; Ex: distal tibiofibular joint

Syndesmosis

8

-Fibrous Joint
-Synarthrosis
-roots of teeth fit into socket; connective tissue is periodontal ligament

Gomphosis

9

-Cartilaginous Joint
-Synarthrosis
-hyaline cartilage bonded to bone; Ex: epiphyseal plate

Synchondroses

10

-Cartilaginous Joint
-Amphiarthrosis
-ends of bones covered by hyaline cartilage but connected my a broad, flat disc of fibrocartilage; Ex: pubic symphysis

Symphysis

11

What 2 parts make up a Synovial Joint?

Articular Cartilage and Articular Capsule

12

What makes up the Articular Capsule of the Synovial Joint?

1) Fibrous Capsule- dense, irregular connective tissue attaches to periosteum of bones; F: flexibility and strength
-some fibers are parallel (ligament= bone to bone)
2)Synovial Membrane- areolar connective tissue with elastic fibers; secretes synovial fluid- hyaluronic acid and interstitial fluid from blood plasma; F: reduces friction by lubricating joint, supplies nutrients, removes wastes, contains phagocytic cells to fight infection

13

What functional classification do all Synovial Joints have?

All synovial joints are diartharotic

14

-Synovial Joint
-Diartharotic
-articulating surfaces are flat or slightly curved; biaxial gliding motion;Ex: intercarpal (within wrist)

Planar

15

-Synovial Joint
-Diartharotic
-convex surface fits into concave; monaxial angular movement; Ex: elbow and fingers

Hinge

16

-Synovial Joint
-Diartharotic
-rounded surface fits into a ring formed partly by bone and partly by ligament; Ex: radioulnal joint (between radius and ulna, can be twisted in and out of anatomical position)

Pivot

17

-Synovial Joint
-Diartharotic
-oval shaped projection fits into oval shaped depression; biaxial angular motion; Ex: metacarpalphalangeal joint (knuckles; metacarpal into phalanges)

Condyloid

18

-Synovial Joint
-Diartharotic
-articular surface on one bone is saddle shaped and the other bone sits in saddle; biaxial angular mothion; Ex: carpometacarpal joint (thumb and metacarpal; wrist bone and metacarpal)

Saddle

19

-Synovial Joint
-Diartharotic
-ball-like surface fits i cuplike depression; multiaxial angular and rotation movements; Ex: hip joint

Ball and Socket