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 A
Explanation
Osteoclasts are the type of cells that break down bone tissue by secreting acid and enzymes.
They are derived from monocytes and macrophages, two types of white blood cells.
Choice B is incorrect because chondrocytes are the cells that produce and maintain cartilage, a flexible connective tissue found in joints.
Choice C is incorrect because osteocytes are the mature bone cells that maintain the mineral concentration of the bone matrix.
They are derived from osteoblasts, the bone-forming cells.
Choice D is incorrect because osteoblasts are the cells that form new bone by synthesizing and secreting collagen and calcium salts.
They are derived from osteogenic cells, the undifferentiated cells that can divide.
Correct Answer is ["condylar process of the mandible"]
Explanation
The mandible condylar process is a bony projection located at the posterior aspect of the mandible, which is the lower jawbone.
It is a rounded, knob-like structure that articulates with the temporal bone of the skull, forming the temporomandibular joint (TMJ).
The condylar process allows for movements of the mandible, including opening and closing the mouth and chewing food.
The shape and position of the condylar process can affect the function of the TMJ and can contribute to conditions such as TMJ disorders.
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