An athlete comes into the hospital saying he was informed by the athletic trainer that he broke a bone in his appendicular skeleton.
Which of the following bones could he have broken?
Mandible.
Radius.
Sternum.
Sacrum.
The Correct Answer is B
The radius is a part of the upper limb, which is supported by the pectoral girdle.
The pectoral girdle and the pelvic girdle, along with the bones of the limbs, form the appendicular skeleton.
Choice A is incorrect because the mandible is a part of the skull, which forms the axial skeleton.
Choice C is incorrect because the sternum is a part of the thorax, which forms the axial skeleton.
Choice D is incorrect because the sacrum is a part of the vertebral column, which forms the axial skeleton.
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Naxlex Comprehensive Predictor Exams
Related Questions
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.
Correct Answer is ["epiphyseal analysis"]
Explanation
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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