Question

Joints are classified on the basis of ___.

• A. number of cartilages
• B. degree of movement
• C. weight of the bones
• D. number of bones

Answer 1

The correct option is: D

Explanation of the correct option:

A joint is classified based on functionality as to how much movement it allows:

1. Immovable: A joint which permits no kind of movement is called as synarthrosis. The sutures of the skull and also the gomphosis connecting teeth to that of the skull are some examples of synarthrosis.

2. Slightly movable: An amphiarthrosis usually allows a very little amount of movement at one of the joints. Examples of this amphiarthrosis include some of the intervertebral disks present in the spine and also the pubic symphysis present in the hips.

3. Freely movable: The third class of functional joints is said to be a freely moving kind of diarthrosis joints. Diarthrosis is said to have the highest range of motion of any kind of joint and also includes the knee, elbow, shoulder, and also wrist.

Explanation of the incorrect option:

Option A: Joints are classified on the basis degree of movement.

Option B: Joints are classified on the basis degree of movement.

Option C: Joints are classified on the basis degree of movement.

Final answer: Joints are classified on the basis degree of movement.