3. What is the meaning of the word bilateral in the following sentence? "The dog developed bilateral weakness in its hindquarters, so the veterinarian created a wheeled cart to help the dog walk."
Answer: A
Present on two sides
The word bilateral in the context of the sentence means that the weakness in the dog's hindquarters is present on both sides rather than just one. This indicates a symmetrical condition affecting both hind legs equally.
A) Present on two sides
This option is correct as it accurately reflects the definition of bilateral, which signifies a condition that affects both sides of the body. In the given sentence, the weakness in the dog's hindquarters is observed on both sides, which aligns with the meaning of bilateral.
B) Available for exercise
This option is incorrect because it does not pertain to the condition described in the sentence. The term bilateral does not convey any information regarding exercise availability but rather focuses on the presence of a condition on both sides.
C) Affecting the left side
This option is incorrect since it only refers to one side of the body. Bilateral implies involvement of both sides, so stating that it affects just the left side misrepresents the condition described in the sentence.
D) Affecting the right side
This option is also incorrect for the same reason as option C. It limits the condition to the right side only, while bilateral indicates that both sides are affected. Thus, it fails to capture the full meaning of the word in the context provided.
Conclusion
The correct answer, "Present on two sides," is definitive as it encompasses the full extent of the condition described in the sentence. Other options fail because they either misinterpret the term bilateral or limit its meaning to one side, which does not reflect the symmetrical nature of the weakness in the dog's hindquarters.