Living Embryos: An Introduction to the Study of Animal Development |
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Page 30
... tissue which rolls over the dorsal lip transforms into notochord , it has a peculiar action upon the tissue lying immediately above it ; this tissue , still on the outside , is changed so that it will become neural . Because the ...
... tissue which rolls over the dorsal lip transforms into notochord , it has a peculiar action upon the tissue lying immediately above it ; this tissue , still on the outside , is changed so that it will become neural . Because the ...
Page 62
... tissue above it to become neural ; that tissue which has not been involved in these movements i.e. which is left on the outside , becomes skin ( ectoderm ) . That vegetal tissue which is enclosed by these movements becomes the endoderm ...
... tissue above it to become neural ; that tissue which has not been involved in these movements i.e. which is left on the outside , becomes skin ( ectoderm ) . That vegetal tissue which is enclosed by these movements becomes the endoderm ...
Page 63
... tissue , the evocator , must be in terms which are " meaningful " to the reacting tissue . A change in pH may induce a tissue culture of anterior ectoderm of the chick to become neural , but will not affect cultures of posterior ...
... tissue , the evocator , must be in terms which are " meaningful " to the reacting tissue . A change in pH may induce a tissue culture of anterior ectoderm of the chick to become neural , but will not affect cultures of posterior ...
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Common terms and phrases
8-cell stage adult albumen allantoic amniotic amphibian animal pole appears artery Ascaris become bird blastocoele blastoderm blastodisc blastomeres blastopore blastula blood brain cavity chick chorion coelom coloured Compare Fig cytoplasm derived dermis differentiation division dorsal lip duct Echinoderms ectoderm embryo embryology embryonic membranes endoderm epiblast epidermis epigenetic fate map feather fertilization membrane fish fold frog gastrulation germ layer gill pouches grey crescent groove homolecithal hypoblast larva later lens liver longitudinal mammals melanoblasts mesentery mesoderm micromeres molluscs myotomes Nematodes nerve neural plate neural tube notochord nucleus occur optic cup ovary periblast pigment placode point of sperm Pomatoceros posterior end primitive streak processes produced quartet result seen side sinus skin somatopleure somites species sperm sperm entry spiral cleavage splanchnopleure stomodeum surface tadpole tail telolecithal tissue culture Transverse section transverse septum trochophore usually vegetal vein ventral vertebrates Vertical section vesicles vitelline membrane wall worm yolk sac yolky