8-Comparative%20Adrenal%20Function[1]

8-Comparative%20Adrenal%20Function[1] - 1 Comparative...

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Unformatted text preview: 1 Comparative Aspects of Comparative Aspects of Vertebrate Adrenals Vertebrate Adrenals Fig 8-1 2 chromaffin tissue Teleosts: steroidogenic cells located in head kidney Chondrichthyeans: interrenales Amphibians: steroidogenic tissue adrenal dogfish kidney leopard frog kidney Adrenals (black) in reptiles turtle snake lizards 3 adrenal kidney Silver gull artery vein kat opossum gordeldier wasbeer human mens 4 • Cyclostomes and fishes: steroidogenic and chromaffin tissue separate and dispersed islands • Amphibians, reptiles and birds: compact glands with chromaffin tissue islands dispersed in steroidogenic tissue • Mammals: compact glands with clear zonation of chromaffin and steroidogenic tissue II. Adrenocortical hormones in II. Adrenocortical hormones in Non Non-Mammals Mammals 5 • Aldosterone, corticosterone and related hormones in non-mammals also called “corticosteroids” despite absence of “cortex” • Many vertebrates do not synthesize aldosterone while corticosterone, cortisol or related steroids function mainly as “mineralocorticoid” mineralocorticoid 6...
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8-Comparative%20Adrenal%20Function[1] - 1 Comparative...

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