Question

The characteristics and an example of a synovial joint in humans is

	Characteristics	Examples
(1)	Fluid cartilage between two bones, limited movements	Knee joints
(2)	Fluid filled between two joints, provides cushion	Skull bones
(3)	Fluid filled synovial cavity between two bones	Joint between atlas and axis
(4)	Lymph filled between two bones, limited movement	Gliding joint between carpals

• A. (1)
• B. (2)
• C. (3)
• D. (4)

Answer 1

The Correct Option is C

In this question, we need to identify the correct characteristics and an example of a synovial joint in humans. Synovial joints are the most common type of joint in the human body and are characterized by the presence of a fluid-filled synovial cavity. Let's evaluate each option:

1. Option (1): "Fluid cartilage between two bones, limited movements". This description does not correctly represent synovial joints, as these joints are highly movable and do not contain fluid cartilage between bones. Instead, they have a synovial fluid-filled cavity.
2. Option (2): "Fluid filled between two joints, provides cushion". While providing cushioning is a function of synovial fluid, the example provided, "Skull bones," is incorrect. The joints between skull bones are sutures, not synovial joints. Therefore, this option is incorrect.
3. Option (3): "Fluid filled synovial cavity between two bones" and "Joint between atlas and axis". This correctly describes synovial joints. Specifically, the joint between the atlas and axis (the first two cervical vertebrae) is a pivot synovial joint. Thus, this is the correct answer.
4. Option (4): "Lymph filled between two bones, limited movement". This is not an accurate description of synovial joints, as they contain synovial fluid, not lymph, and allow significant movement. The example "Gliding joint between carpals" is a type of synovial joint, but the description of characteristics is incorrect.

The correct option based on the characteristics of synovial joints and their examples is (3). Synovial joints, such as the one between the atlas and axis, are characterized by a synovial cavity filled with synovial fluid, which facilitates movement.