Which of the following statements are correct with reference to human endoskeleton?
A. Human skull is monocondylic.
B. The joint between any two adjoining vertebrae is a cartilaginous joint.
C. In human beings, the number of cervical vertebrae is seven.
D. All ribs except the last 2 pairs are bicephalic.
E. The occipital bone of skull is articulated with atlas vertebra.
Choose the correct answer from the options given below:
- A
B and E only
- B
B, C and E only
- C
C, D and E only
- D
A, B and D only
The human skull is dicondylic (two occipital condyles articulating with the atlas), not monocondylic, so statement A is wrong.
The joint between adjoining vertebrae is cartilaginous, humans have 7 cervical vertebrae, and the occipital bone articulates with the atlas through two condyles forming the atlanto-occipital joint, so B, C and E are correct.
All human ribs are bicephalic (have two articulation surfaces), so statement D is incorrect.
Correct set: B, C and E.
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