Archive image from page 309 of The Danish Ingolf-expedition (1899-1953). The Danish Ingolf-expedition danishingolfex5cpt9daniuoft Year: 1899-1953 30 II. / trffp end. Fig. 26. Sleenstrupia nutans. Transversal section of adradial part of female manubrium, comprising a part of one of the longitudinal muscular bands. — ect. ep. ectodermal epithelium; end. endodermal epi- thelium; »«. c. circular muscles in the endoderm; m. I. longitudinal muscles in the ectoderm; 0. ma- ture egg with nucleus; oocytes; undeve- loped eggs; s. /. supporting lamella; st. c. sto
Archive image from page 309 of The Danish Ingolf-expedition (1899-1953). The Danish Ingolf-expedition danishingolfex5cpt9daniuoft Year: 1899-1953 30 II. / trffp end. Fig. 26. Sleenstrupia nutans. Transversal section of adradial part of female manubrium, comprising a part of one of the longitudinal muscular bands. — ect. ep. ectodermal epithelium; end. endodermal epi- thelium; »«. c. circular muscles in the endoderm; m. I. longitudinal muscles in the ectoderm; 0. ma- ture egg with nucleus; oocytes; undeve- loped eggs; s. /. supporting lamella; st. c. stomachal cavity. — X 150. about as broad as the intervening, interradial parts (textfigs. 25 and 26). The supporting lamella is fairly thick, particularly so in the broad, perradial parts, where its outer surface is longitudinally cancelled, thus increasing the surface on which the muscular bands are fastened. It would be interesting to know, whether J, this holds good also for other species of the genus Steenstrupia sensu strictu. — The endodermal circular musculature is evenly distributed. The structure of the endodermal epithelium of the niauu- lirium is somewhat different in the different parts of the manu- lirium. In the proximal part (textlig. 25) there are four perra- dial, highly elevated, narrow, undulating ridges, gradually ta- i:)eriug towards the distal half part, where the ridges are nearly obsolete. In the mouth tube the perradial ridges reappear, but are broad and thick, separated b}- four narrow grooves. Through- out the manubrium the endo- dermal epithelium is transversally wrinkled, consisting of cylindrical cells (textfig. 26). — The manu- brium is broadly attached to the sul)uml)rella, or rather to the stomachal pe- .. abaxial axial prolongation of tile bulb growing outwards and u]>\vards, from the tenta- ''''velum''—'x '8 ' ' culiferous (textfig. 27) as well as from the tliree rudimentary bulbs (textfig. 28). This endodermal outgrowth is only s
Size: 1205px × 1660px
Photo credit: © Bookive / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1890, 1899-1953, archive, arctic_regions, book, bookauthor, bookdecade, bookpublisher, booksubject, bookyear, copenhagen_h_hagerup, danish_ingolf_expedition_1895_1896_, drawing, historical, history, illustration, image, k_benhavns_universitet_zoologisk_museum, marine_animals_arctic_regions, page, picture, print, reference, scientific_expeditions, vintage
