Which of the following is not a part of the appendicular skeleton?
Clavicle.
Rib.
Femur.
Scaphoid.
The Correct Answer is B
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.
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Related Questions
Correct Answer is C
Explanation
Choice A is incorrect because transverse fractures are the type of fractures where the bone has a horizontal fracture line.
They are usually caused by a strong force applied at a right angle to the bone shaft.
Choice B is incorrect because spiral fractures are the type of fractures where the bone has an angled fracture line that curves around the bone shaft.
They are usually caused by a twisting force applied to the bone.
Choice D is incorrect because greenstick fractures are the type of fractures where the bone is bent and partially broken on one side.
They are usually seen in children whose bones are softer and more flexible than adults.
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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