. Comparative anatomy. Anatomy, Comparative. 208 COMPARATIVE ANATOMY forms and arrangement of the cervical vertebrae permit greater freedom of movement than is possible in other parts of the column. The spinous process of each cervical vertebra except the last is forked or bifid. Only the twelve thoracic vertebrae carry ribs. A pit in the centrum articulates with the head of the rib and a similar pit at the extremity of the POSTERIOR ⢠TUBERCLE "'^-3;a3:t ' L yfTU-^^^^0l^^i£ ^^Ss., SUPERIOR \ ">^jJ % VERTEBRAL TRAMSVERSE J^ \ JT^ , "Xife-,2^ ARTICULAR PROCESS ⢠f /^ â ^^ ^
. Comparative anatomy. Anatomy, Comparative. 208 COMPARATIVE ANATOMY forms and arrangement of the cervical vertebrae permit greater freedom of movement than is possible in other parts of the column. The spinous process of each cervical vertebra except the last is forked or bifid. Only the twelve thoracic vertebrae carry ribs. A pit in the centrum articulates with the head of the rib and a similar pit at the extremity of the POSTERIOR ⢠TUBERCLE "'^-3;a3:t ' L yfTU-^^^^0l^^i£ ^^Ss., SUPERIOR \ ">^jJ % VERTEBRAL TRAMSVERSE J^ \ JT^ , "Xife-,2^ ARTICULAR PROCESS ⢠f /^ â ^^ ^'FORAMEN PROCESS 1 Jma^J^ / V^^Sf' ^jL^rfn / >^. INFERIOR VERTEBRAL NOTCH \MNFERIOR ^ARTICULAR PROCESS Fig. 164.âVarious human vertebrae A-D. A represents an atlas vertebra, superior surface; 5 is a cervical vertebra, superior surface; C-C a thoracic vertebra in lateral and superior aspect; D-D a lumbar vertebra in lateral and superior aspect. (Redrawn after Sobotta.) transverse process articulates with the tubercle of the rib. The head of most ribs articulates with two adjacent centra. The five lumbar vertebrae are the largest. Short ribs fuse with them to form conspicuous transverse processes. The neural arches of these vertebrae have mammillary and accessory processes in addition to Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Neal, Herbert V. (Herbert Vincent), 1869-1940; Rand, Herbert W. (Herbert Wilbur), 1872-1960. Philadelphia : P. Blakiston's Son
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