. The cat : an introduction to the study of backboned animals, especially mammals. Cats; Anatomy, Comparative. chap, ra.] SKELETON OF TEE HEAD AND TRUNK. 39 upwards and outwards, outside the prezygapophysis, is termed the mammillary process, or Metapophysis. The posterior process (a), which projects "backwards as much as any other part of the vertebra, is called the accessory process, or Anapophysis. The prezygapophyses look almost entirely inwards, while the postzygapophyses (5) look almost entirely outwards. The twelfth and thirteenth dorsal vertebrae are like the eleventh, but their an
. The cat : an introduction to the study of backboned animals, especially mammals. Cats; Anatomy, Comparative. chap, ra.] SKELETON OF TEE HEAD AND TRUNK. 39 upwards and outwards, outside the prezygapophysis, is termed the mammillary process, or Metapophysis. The posterior process (a), which projects "backwards as much as any other part of the vertebra, is called the accessory process, or Anapophysis. The prezygapophyses look almost entirely inwards, while the postzygapophyses (5) look almost entirely outwards. The twelfth and thirteenth dorsal vertebrae are like the eleventh, but their anapophyses are stouter and their neural spines are larger and project more forward. § 7. The seven lumbar vertebras are larger and more massive than the dorsal vertebrae, and increase in size as we proceed back- wards as far as the sixth lumbar (see Fig. 23). Selecting the fifth for comparison with the fifth dorsal, we find its centrum broader in proportion to its depth, about twice as long, less convex transversely below, and with a slight median ridge, called hypapophysial* running from before backwards, along its under surface. The neural lamina and pedicel are much longer, and the latter, though deeply notched behind, is scarcely at all so in front. The neural spine is very much shorter, absolutely as well as relatively. te^Ih II^Ileveoth verteb™ It is elongated from before backwards, slightly separated. and inclines forwards instead of back- 1l jsSSiS^SEtea. wards, thus agreeing with the last "• Anapophysis. _ ' _ \> . B d. Tubercular process. three dorsal vertebrae. m. Metapophysis. mi i j/l • i i »• Part of transverse process Ine zygapophyses are thicker, and which conceals from view their articular surfaces are differently p c^tSproS?" shaped from those of the dorsal vertebrae. s- Keurai spine. -J, 1 , . , /» Z. Anterior zygapophvsis. Each prezygapophySial Surface IS 3. Posterior zygapophysia. concave, and looks inwards as well as upwards. The pos
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