Excretory System Stage 3

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“The origin of the mesonephric tubules is seen. They arise from the upper part of the lateral plate, which is now completely separated from the primitive segment, and curving round the pronephric duct come to open into it. n.c., nerve cord; nch., notochord; pn., pronephros; g., gut; p.s., primitive segment; mes., mesonephric tubule; pn.d., pronephric duct; b.c., body cavity; ao., aorta; siv., sub-intestinal vein, with vessel to the aorta.” -Thomson, 1916

Keywords

aorta, Notochord, excretory system, primitive excretory system, vertebrate excretory, nerve cord, pronephros, primitive segment, mesonephric tubule, pronephric duct, body cavity, sub-intestinal vein

Galleries

Comparative Anatomy

Source

J. Arthur Thomson, M.A., LL.D. Outlines of Zoology (New York, NY: D. Appleton & Company, 1916)

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