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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
The rib is a part of the axial skeleton, not the appendicular skeleton.
The axial skeleton
Choice A is incorrect because the clavicle is a part of the pectoral girdle, which connects the upper limbs to the axial skeleton.
Choice C is incorrect because the femur is a part of the lower limb, which is supported by the pelvic girdle.
Choice D is incorrect because the scaphoid is a part of the carpals, which are bones of the wrist in the upper limb.
Correct Answer is ["thoracic costal facet"]
Explanation
The thoracic costal facet is a feature found on the thoracic vertebrae, which are the bones that make up the mid-back region of the spine.
The costal facet is a small, flat surface located on the transverse process of the thoracic vertebrae, where it articulates with the head of the rib.
There are two costal facets on each thoracic vertebra, one on the transverse process and one on the body of the vertebra.
The costal facet is an important anatomical feature as it provides stability and support to the rib cage and facilitates the movements of the thoracic spine during respiration and other activities.
Injuries to the costal facet can result in rib fractures or dislocations, which can be very painful and require medical intervention.
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