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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The skeletal system has five main functions: support, movement, protection, mineral and fat storage, and blood cell formation.
All of the other choices are primary functions of the skeletal system.
Choice B is incorrect because storing inorganic salts is one of the functions of the skeletal system.
The bone tissue acts as a reservoir for minerals like calcium and phosphorus.
Choice C is incorrect because attachment sites for muscles is one of the functions of the skeletal system.
Bones facilitate movement by serving as points of attachment for muscles.
Choice D is incorrect because support and protection is one of the functions of the skeletal system.
Bones provide a scaffold that supports the body and protects the internal organs.
Correct Answer is ["linea aspera"]
Explanation
The linea aspera is a ridge of bone on the posterior surface of the femur.
It is a prominent feature that serves as a site of attachment for several important muscles, including the adductor magnus, vastus medialis, and the long head of the biceps femoris.
The linea aspera extends from the greater trochanter of the femur to the lateral condyle of the femur, dividing the posterior surface of the bone into two distinct regions.
The medial lip of the linea aspera serves as an attachment site for the adductor magnus, while the lateral lip provides attachment for the vastus medialis and the long head of the biceps femoris.
Injuries to the linea aspera can occur as a result of direct trauma or repetitive stress and can cause pain and discomfort in the thigh.
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