Chpt. 8.1 Joints

Question 1

Syndesmosis

Answer 1

-Fibrous Joint

• bound by interosseous membrane/ligament
• ampiarthrotic
• ex: between tibia & fibula, tibiofibular articulation

Question 2

Suture

Answer 2

-Fibrous Joint

• flat bones united by sutural ligament
• synarthrotic
• ex: between skull plates

Question 3

Gomphosis

Answer 3

-Fibrous Joint

• cone-shaped process surrounded by periodontal ligament
• synarthrotic
• ex: root of tooth

Question 4

Synchondrosis

Answer 4

-Cartilaginous Joint

• bones united by bands of hyaline cartilage
• synarthrotic
• ex: between the first rib & manubrium

Question 5

Symphysis

Answer 5

-Cartilaginous Joint

• articular surfaces covered by hyaline cartilage and bones connected by pad of fibrocartilage
• amphiarthrotic
• ex: joints between bodies of vertebrae, pubic symphysis

Question 6

Ball-and-socket

Answer 6

-Synovial Joint

• ball-shape head articulates with cup-shaped socket
• multiaxial (including rotation)
• ex: shoulder, hip

Question 7

Condylar

Answer 7

-Synovial Joint

• oval-shape condyle articulates with elliptical cavity
• biaxial (no rotation)
• ex: joints between metacarpals and phalanges

Question 8

Plane

Answer 8

-Synovial Joint

• nearly flat or slightly curved articulating surfaces
• nonaxial (sliding/twisting only)
• ex: joints between various bones of wrist and ankle

Question 9

Hinge

Answer 9

-Synovial Joint

• convex surface articulates with concave surface
• uniaxial (flexion/extension)
• ex: elbow and joints of phalanges

Question 10

Pivot

Answer 10

-Synovial Joint

• cylindrical surface articulates with ring of bone and ligament
• uniaxial (only rotation)
• ex: joint between proximal ends of radius and ulna

Question 11

Saddle

Answer 11

-Synovial Joint

• both concave and convex regions fits complementary surface of other bone
• biaxial
• ex: joint between carpal and metacarpal of thumb