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Locomotion and Movement question

2010 · Q9
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Locomotion and Movement question

2010 · Q9

NEETBiologyLocomotion and MovementMCQ+4 / −1
Which one of the following is the correct description of a certain part of a normal human skeleton?
  1. A
    Parietal bone and the temporal bone of the skull are jointed fibrous joint.
  2. B
    First vertebra is axis which articulates with the occipital condyles.
  3. C
    The 9th and 10th pairs of ribs are called the floating ribs .
  4. D
    Glenoid cavity is a depression to which the thigh bone articulates.
View written solutionFree

Correct answer: A

The bones of skulls are joined by white fibrous tissue which sustain no movement between the skull bones. This kind of joint is classified as fibrous or immovable joints. Thus, parietal and temporal bone of the skull are joined by fibrous joints. First cervical vertebra, atlas, joins the second cervical vertebra axis to form a joint (pivot joint) which allows movement in one plane. The atlas supports the head and allows movement of head over neck.

The last two pairs of ribs are called floating ribs because their anterior ends are not attached to either the sternum or the cartilage of anterior rib. Glenoid cavity is a depression to which humerus articulates.

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