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Assertion: The axis vertebra facilitates the rotational movement of the neck.
Reason: The absence of the centrum in the atlas vertebra supports this function.
Both the assertion and reason are individually true, and the reason is the correct explanation of the assertion.
Both the assertion and reason are individually true, but the reason is not the correct explanation of the assertion.
The assertion is true, but the reason is false.
The assertion is false, but the reason is true.
Answers (1)
The assertion states that the axis vertebra is responsible for facilitating the rotational movement of the neck. This assertion is indeed true, as the axis vertebra has a unique anatomical structure that allows for the rotation of the head and neck.
However, the reason provided states that the absence of the centrum in the atlas vertebra supports this function. This reason is not accurate because the absence of the centrum in the atlas vertebra does not directly contribute to the rotational movement of the neck. The absence of the centrum is a characteristic feature of the atlas vertebra, which allows for greater flexibility and range of motion in the neck, but it is not the main reason behind the rotational movement facilitated by the axis vertebra.
Therefore, both the assertion and reason are individually true, but the reason does not provide the correct explanation for the assertion. The rotational movement of the neck is primarily facilitated by the unique structure and articulations of the axis vertebra, rather than the absence of the centrum in the atlas vertebra. Hence, the correct answer is option 2.
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