The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 805
... cells surround a central cavity . The follicles contain a gelatinous pink material , the colloid , in which thyroid hormones are stored bound to a protein called thyroglobulin . The structure of these cells varies with their state of ...
... cells surround a central cavity . The follicles contain a gelatinous pink material , the colloid , in which thyroid hormones are stored bound to a protein called thyroglobulin . The structure of these cells varies with their state of ...
Page 817
... cells . A neural theory holds that the sympathetic nervous system regu- lates renin via a direct secretomotor nerve supply to the juxtaglomerular cells . The renal baroreceptor theory was advanced to explain why renin secretion is ...
... cells . A neural theory holds that the sympathetic nervous system regu- lates renin via a direct secretomotor nerve supply to the juxtaglomerular cells . The renal baroreceptor theory was advanced to explain why renin secretion is ...
Page 843
... cells scattered through the mucosa ( inner lining layer ) . The gastrin then released by the stomach into the blood affects the stomach itself , principally stimulating the enzyme- forming cells to secrete pepsin , so - called parietal ...
... cells scattered through the mucosa ( inner lining layer ) . The gastrin then released by the stomach into the blood affects the stomach itself , principally stimulating the enzyme- forming cells to secrete pepsin , so - called parietal ...
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activity Africa agriculture America became become body called capital caused central centre century changes Christian Church continued core countries cultural demand direction early Earth East Eastern eclipse economic effect established Europe example feet field Figure flow force groups growth important income increase industry internal investment Italy kilometres known labour Lake land later less living magnetic major mantle material means measurements ment metres miles mountains move movement nature North observed occur ocean organization origin Orthodox patriarch percent period planning Pleistocene political population position possible present problems production region relatively remained result rise River rocks social society South species structure surface theory tion trade traditional United West Western