. The American journal of anatomy. inalvein and the aorta run a few sections above the upper level ofthis reconstruction, but the coccygeal branches of the aorta(fig. 12, 4) and a little more externally the coccygeal veins {3)which drain into the postcardinals, are seen running downwardat right angles and dorsal to the axis of the vertebral column. Allof these structures are medial to the caudal muscle plate, whichhas been omitted from this reconstruction for the sake of simplic-ity. This muscle plate extends in a plane, parallel to the ecto- Fig. 10 Chick 12 mm., Series 46, Slide 1, Row 4, Se
. The American journal of anatomy. inalvein and the aorta run a few sections above the upper level ofthis reconstruction, but the coccygeal branches of the aorta(fig. 12, 4) and a little more externally the coccygeal veins {3)which drain into the postcardinals, are seen running downwardat right angles and dorsal to the axis of the vertebral column. Allof these structures are medial to the caudal muscle plate, whichhas been omitted from this reconstruction for the sake of simplic-ity. This muscle plate extends in a plane, parallel to the ecto- Fig. 10 Chick 12 mm., Series 46, Slide 1, Row 4, Section 4. X 500. Photo-micrograph ot transverse section of caudal end of the embryo. Uninjected. Fig. 11 Chick 15 mm., Series 16, Slide 2, Row 4, Section 7. X 600. Photo-micrograph of transverse section of caudal end of the embryo. Figure 10 Figure 11 3, Coccygeal vein 5, Haemal capillaries 6, Caudal muscle plate 17, Blood cells differentiating from 16, Blood cells differentiating from lymphatic walls endothelium .«,^ ^?^^ 3: ^^. ,V f
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1901
