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Multiple Choice
Which of the following examples represents a bony joint?
A
The intervertebral disc joint
B
The pubic symphysis
C
The shoulder joint
D
Fusion of the frontal bones in the adult skull
Verified step by step guidance
1
Step 1: Understand the concept of a bony joint. A bony joint, also known as a synostosis, occurs when two bones fuse together to form a single bone. This type of joint is immovable and typically forms during development or as a result of aging.
Step 2: Review the examples provided in the question. The intervertebral disc joint, pubic symphysis, and shoulder joint are all examples of other types of joints, such as cartilaginous joints or synovial joints, which allow varying degrees of movement.
Step 3: Focus on the fusion of the frontal bones in the adult skull. During development, the frontal bones are separate, but they fuse together to form a single frontal bone in the adult skull. This fusion is an example of a bony joint (synostosis).
Step 4: Compare the fusion of the frontal bones to the other examples provided. Unlike the intervertebral disc joint, pubic symphysis, or shoulder joint, the fusion of the frontal bones represents a complete immovable union of bones, characteristic of a bony joint.
Step 5: Conclude that the correct answer is the fusion of the frontal bones in the adult skull, as it is the only example that represents a bony joint (synostosis).