| Description | Slide shows two microscopic diagrams showing the 'Map of the presumptive regions of the Anuran embryo, projected onto the surface of the blastula, as seen from the dorsal and left sides.'
Diagrams each have their own labels which are explained in the title below the images:
'Fig. 6. Map of the presumptive regions of the Anuran embryo, projected onto the surface of the blastula, as seen from the dorsal and left sides. Epidermis, sparse broken lines; neural plate, dense broken lines; notochord, dense dots; mesoderm, fine dots; endoderm, white. The future mesodermal segments are numbered. A, eyes; aP, animal pole; Egr, limit of invaginated region; Ex, epidermis of limb region; Hbl, ear vesicle; Hd, ventral sucker; J, site of formation of first invagination (dorsal lip); K, gill-pouches, and epidermis of gill region; Kgr, broken line indicating limits of head; L, lens; Mw, neural fold; U, position of future blastopore lip; VEx, forelimb; vP, vegetative pole. Kopfdarm, foregut; Mund, buccal cavity; Rumpfdarm, hindgut. (From Vogt, Arch., Entwmech., cxx, 1929.)' |