The Science of Life, Volumen 4Cassell, 1931 - 896 páginas |
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Página 66
... function , on the other hand , is of immediate and critical importance ; when necessity demands , other functions are neglected and all the resources of the circula- tion are concentrated on this one vital need . It is clear , then ...
... function , on the other hand , is of immediate and critical importance ; when necessity demands , other functions are neglected and all the resources of the circula- tion are concentrated on this one vital need . It is clear , then ...
Página 102
... functions . The pancreas , for ex- ample , has islets of endocrine cells scattered among its digestive tubules , and their secretion , insulin , has a very important function in controlling the handling of sugar by our tissues . The ...
... functions . The pancreas , for ex- ample , has islets of endocrine cells scattered among its digestive tubules , and their secretion , insulin , has a very important function in controlling the handling of sugar by our tissues . The ...
Página 222
... functional ovaries and oviducts : so that the presence of the vestigial right set of organs is perfectly intelligible ... function of food - manufacture by their thickened stems , and for the same reason of economizing water . In flowers ...
... functional ovaries and oviducts : so that the presence of the vestigial right set of organs is perfectly intelligible ... function of food - manufacture by their thickened stems , and for the same reason of economizing water . In flowers ...
Índice
THE RANGE NATURE AND STUDY OF LIVING THINGS | 3 |
66 | 5 |
muscles and related | 8 |
Otras 62 secciones no se muestran.
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Términos y frases comunes
active algæ animals arthropods bacteria become birds blood body bones brain branches called capillaries carbon carbon dioxide cells Cenozoic changes chemical chromosomes colour creatures crustaceans digestive Echinoderms eggs elaborate embryo Eocene Everyman evolution example eyes fact female fertilized fish flatworms flowers fluid forms fossils gametes genes germ-plasm glands grow growth heart human Ichthyosaurs important individual insects intestine kidneys kinds land larvæ layer less limbs liver living things lobster lungs male mammals marsupials matter means ment microscopic million molluscs mouse mouth movements muscles mutations nervous system normal notochord Obelia organs ovary ovum oxygen pair parasitic phylum plants polyps produced proteins prothallus protozoa reproduction reptiles round secretion sense-organs sexual shell skeleton skin species spermatozoa sperms spores stage starfish stomach structure substances surface swim tail teeth thyroid tiny tion tissue to-day tube types variations various vertebrates whole worms