Any vertebra of the rabbit may be compared with the corresponding vertebra of any mammal or in a general way with those of any vertebrate, and will be found to show resemblances and differences corresponding with those of the precise functions performed by the bones compared. The fifth lumbar vertebra of the rabbit, for example, would be found distinguished by used in leaping. The corresponding human vertebra, or the third as functionally more nearly equivalent, is weak in muscular expansion, but its body is massive for purposes of axial support. A corresponding vertebra of the bear will be found more or less intermediate between the two types.
The two most cephalic vertebrae of the rabbit are very much modified to provide for the movements and the support of the head. The centrum of the first vertebra, or atlas, has lost its connection with the rest of this part and has fused with the anterior end of the centrum of the second vertebra, the epistropheus, to form a pivot round which the ring-like atlas can rotate. The ventral part of the adult atlas is derived from a small element, the intercentrum, which in other vertebrae has disappeared. These changes occurred in early reptiles but reach their most perfect expression in mammals.
The two most cephalic vertebrae of the rabbit are very much modified to provide for the movements and the support of the head. The centrum of the first vertebra, or atlas, has lost its connection with the rest of this part and has fused with the anterior end of the centrum of the second vertebra, the epistropheus, to form a pivot round which the ring-like atlas can rotate. The ventral part of the adult atlas is derived from a small element, the intercentrum, which in other vertebrae has disappeared. These changes occurred in early reptiles but reach their most perfect expression in mammals.
Comparative anatomy between human and other mammals are interesting subject.
That why used rabbit in comparative human anatomy...Mr. Adel Hasan Ali ...
Good notice Mr Faissal Logan ...but I have no idea about it....if I found something I will mention it....thanks..
In studying of baboon, sheep, porcine, calf and deer anatomy in comparison with human, distinct anatomical differences of vertebrae were found between the human and each large animal spine. In cervical region, spines of the baboon and human are more similar as compared to other animals. In thoracic and lumbar regions, the mean pedicle height of all animals was greater than the human pedicles. There was similar mean pedicle width between animal and the human specimens, except in thoracic segments of sheep. The human spinal canal was wider and deeper in the anteroposterior plane than any of the animals. The mean human vertebral body width and depth were greater than that of the animals except in upper thoracic segments of the deer. However, the mean vertebral body height was lower than that of all animals.
Source: Anatomy of large animal spines and its comparison to the human spine: a systematic review, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2899734/
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