Question

Observe the flowchart with reference to joints and their examples.

• A. A - Cartilaginous joint, B - Pivot joint, C - Knee joint, D - Cranial sutures
• B. A - Pivot joint, B - Knee joint, C - Cranial sutures, D - Cartilaginous joint
• C. A - Saddle joint, B - Cranial sutures, C - Cartilaginous joint, D - Pivot joint
• D. A - Cranial sutures, B - Cartilaginous joint, C - Pivot joint, D - Knee joint

Hint:

Identify the easiest match first. "Fibrous joint = immovable = cranial sutures" quickly eliminates options 1, 2, and 3.

Answer 1

The Correct Option is D

Step 1: Understanding the Problem:
Joints are the junctions where bones meet. Based on their structural composition and the movement they allow, human joints are classified into Fibrous, Cartilaginous, and Synovial joints.
Step 2: Approach and Formula:
Classify the structural types of joints and match them with their specific anatomical examples provided in the flowchart nodes.
Step 3: Detailed Explanation:
Analyzing the implicit branches from standard biology flowcharts:
- Fibrous Joints allow no movement. A prime example is the flat skull bones fusing to form the cranium. Thus, A = Cranial sutures.
- Box B represents a major category parallel to Fibrous and Synovial joints. The example given is "Between adjacent vertebrae". These joints allow limited movement. Thus, B = Cartilaginous joint.
- Synovial Joints allow considerable movement. The flowchart branches into specific synovial types. One leads to "Between atlas and axis vertebrae". This rotational joint is a pivot type. Thus, C = Pivot joint.
- Another branch under Synovial joints is "Hinge joint", which leads to Box D. A classic example of a hinge joint is the knee. Thus, D = Knee joint.
Matching all derived components: A - Cranial sutures, B - Cartilaginous joint, C - Pivot joint, D - Knee joint.
Step 4: Final Answer:
The correct option is (D).