Joints

Question 1

Joint (Articulation)

Answer 1

• The connection btwn two bones
• Synovial, fibrous, or cartilaginous

Question 2

Synovial Joints

Answer 2

Mobile joints
Allow purposeful movement

Question 3

Fibrous Joints

Answer 3

Sutures of skull, little/no mobility, stability

Question 4

Cartilaginous Joints

Answer 4

Public symphysis, little/no mobility, stability

Question 5

close-pack position

Answer 5

Maximal contact between articular surfaces
EX: Knee in full extension

Question 6

Open-Pack Position

Answer 6

• Least surface contact
• increased mobility of joint

Question 7

Ball & Socket Joint

Answer 7

• Spherical surface fits into concave depression
• Most mobile

Question 8

Ellipsoid Joint

Answer 8

Oval-shaped convex end articulates with elliptical concave basin of another
- motion around two axes

Question 9

Saddle Joint

Answer 9

• Modified ellipsoid joint
• convex and concave articulating surfaces
• motion around two axes
• (joint of thumb)

Question 10

Hinge Joint

Answer 10

• Motion around single axis
• only flexion and extension

Question 11

Gliding Joint

Answer 11

• two flat surfaces of adjacent bones
• least movement
• Translation (gliding movement)
  -(carpal bones of the wrist)

Question 12

Pivot Joint

Answer 12

• Motion around one axis
• bones rotating around another
• (shaking head no)