How can an X-ray of a child’s femur be used to determine the approximate age of that child?
The Correct Answer is ["epiphyseal analysis"]
The epiphysis is the rounded end of the femur that articulates with the hip bone and knee joint.
As a child grows, the epiphysis gradually fuses with the rest of the bone through a process called ossification.
By examining the degree of fusion of the epiphysis with the femur on an X-ray, doctors can estimate the age of the child.
In general, the younger the child, the less fused the epiphysis will be, and the easier it will be to determine the child's age.
However, it's important to note that this method provides only an approximate age range and cannot be used to determine an exact age.
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Related Questions
Correct Answer is ["Tibia"]
Explanation
The tibia, also known as the shinbone, is the larger of the two bones in the lower leg.
It is a long bone that extends from the knee joint to the ankle joint, and it plays an important role in supporting body weight and providing attachment sites for muscles.
The tibia has a triangular cross-section and features several surface landmarks, including the tibial plateau, the medial malleolus, and the tibial tuberosity.
The bone is also involved in the formation of the knee joint and the ankle joint, where it articulates with the femur and the talus bones, respectively.
Correct Answer is D
Explanation
The mastoid process is a bony projection of the temporal bone at the posterior base of the skull.
It allows the attachment of muscles such as the sternocleidomastoid and splenius capitis.
It also contains air-filled spaces called the mastoid air cells.
Choice A is incorrect because the occipital bone forms the back and base of the skull and does not have a mastoid process.
Choice B is incorrect because the sphenoid bone is a butterfly-shaped bone at the base of the skull that does not have a mastoid process.
Choice C is incorrect because the frontal bone forms the forehead and the upper part of the eye sockets and does not have a mastoid process.
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