. A manual of elementary zoology . Zoology. 298 MANUAL OF ELEMENTARY ZOOLOGY stomodseum, or fore-gut, known as the pharynx, a long mid- gut, and a short proctodeum, or hind-gut, known as the rectum. The fore- and hind-guts are lined by inturned ectoderm, with a prolongation of the outer cuticle, which is. egg vl. Fig. 205.—A transverse section through the middle 6f the body of a female Ascaris lumbricoides. cu., Cuticle ; , dorsal line ; , dorsal nerve ; cct., ectoderm"; egx\ end., endo- derm; , excretory canal; int., intestine; /./., lateral line; muscle fibre; «»., ovar
. A manual of elementary zoology . Zoology. 298 MANUAL OF ELEMENTARY ZOOLOGY stomodseum, or fore-gut, known as the pharynx, a long mid- gut, and a short proctodeum, or hind-gut, known as the rectum. The fore- and hind-guts are lined by inturned ectoderm, with a prolongation of the outer cuticle, which is. egg vl. Fig. 205.—A transverse section through the middle 6f the body of a female Ascaris lumbricoides. cu., Cuticle ; , dorsal line ; , dorsal nerve ; cct., ectoderm"; egx\ end., endo- derm; , excretory canal; int., intestine; /./., lateral line; muscle fibre; «»., ovary; , perivisceral cavity; ut., uterus; ».<., ventral line; , ventral nerve. shed with the latter. They have in their walls muscular fibres. The mid-gut is composed solely of a layer of columnar epithelium, with a very delicate cuticle within and without. The food consists of solids and liquids taken up from the contents of the intestine of the host. There is no vascular or respiratory system (see p. 309).. 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 Borradaile, L. A. (Lancelot Alexander), 1872-1945. London : H. Frowde, Hodder & Stoughton
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1920
