Joints of skeletal system

Question 1

What are the 3 main joint types

Answer 1

Ball and socket joint
Hinge joint
Pivot joint

Question 2

Describe ball and socket joint

Answer 2

a ball shaped head is connected to a cup shaped socket and allows a wide movement range

for ex:
- flexion
- extension
- adduction
- abduction
- rotation
- circumduction

Question 3

Functions of ball and socket joint

Answer 3

• flexion
• extension
• adduction
• abduction
• rotation
• circumduction

Question 4

what is the hinge joint?

Answer 4

The articulating ends of the bone fit together (like a door hinge)

Question 5

What are the functions of hinge joints?

Answer 5

• Flexion
• Extension
  (restricted movements)

Question 6

Examples of hinge joints

Answer 6

• elbow joint
• knee joint
• ankle joint
• joints between phalanges of fingers and toes

Question 7

what are pivot joints?

Answer 7

one bone fits into a hoop shaped ligament that holds it close to another bone and allows it to rotate in the ring formed by the ligament.

These joints allow bones/limbs to rotate

Question 8

Give an example for pivot joints

Answer 8

the head rotate by a pivot joint formed by the atlas vertebrae within the transverse ligament ring and odontoid process of axis