Elementary text-book of zoology, general Elementary text-book of zoology, general part and special part: protozoa to insecta elementarytextbo00clau Year: 1892 Fig. 74 a—Diac^ram ot the vertebral column of aTeleosteaa fish, with verte- bral constriction of the notochord. Ch, notochord; Wk, bony vertebral bodies ; J, membranous intervertebral section. Fig. 74 b—Vertebra of a fish. K, ver- tebral body. Oh, neural arch (neura- pophysis) ; Ub, haemal arch (hsemapo- physis) ; D. neural spine j D', hamal spine; -E, rib. uniform segmentation and partially fuse with one another to form several success
Elementary text-book of zoology, general Elementary text-book of zoology, general part and special part: protozoa to insecta elementarytextbo00clau Year: 1892 Fig. 74 a—Diac^ram ot the vertebral column of aTeleosteaa fish, with verte- bral constriction of the notochord. Ch, notochord; Wk, bony vertebral bodies ; J, membranous intervertebral section. Fig. 74 b—Vertebra of a fish. K, ver- tebral body. Oh, neural arch (neura- pophysis) ; Ub, haemal arch (hsemapo- physis) ; D. neural spine j D', hamal spine; -E, rib. uniform segmentation and partially fuse with one another to form several successive regions, the parts of which are capable of a greater or less amount of movement upon one another (head, neck, thorax, lumbar region, etc.) In this case, however, the parts of the skeleton of the chief axis are usually less movable upon one another, while, on the contrary, a much more perfect locomotion is effected by the extensive movements of the paired extremities or limbs. The limbs likewise possess a solid skeleton, to which the muscles are attached, and which is usually elongated and may be external or internal, und is attached more or less closely to the axial skeleton. The most essential property of animals is that of sensation. This
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