. Animal hormones; a comparative survey. Hormones. Fig. 2-1 (5^) Fig. 2-1. Cells derived from the nervous system, (a) Typical motor nerve cell with branched dendrites (de), cell body with Nissl bodies () in cytoplasm, nucleus (nu) w4th nucleolus, and long axon (ax) branching to motor end-plates () on muscle fibres (m). (b—d) Neurosecretory cells with stainable granules (gr): (b) with dendrites, from supraoptic nucleus of dog (after Scharrer and Scharrer, 1954ft); (c) wdthout dendrites, the blunt axon is swollen with secretory granules that pass to a blood vessel () from gang- l
. Animal hormones; a comparative survey. Hormones. Fig. 2-1 (5^) Fig. 2-1. Cells derived from the nervous system, (a) Typical motor nerve cell with branched dendrites (de), cell body with Nissl bodies () in cytoplasm, nucleus (nu) w4th nucleolus, and long axon (ax) branching to motor end-plates () on muscle fibres (m). (b—d) Neurosecretory cells with stainable granules (gr): (b) with dendrites, from supraoptic nucleus of dog (after Scharrer and Scharrer, 1954ft); (c) wdthout dendrites, the blunt axon is swollen with secretory granules that pass to a blood vessel () from gang- lionic-X-organ of crab, Sesarma (after Enami, 1951). {d) cell with shorter axon, from epistellar body of Eledone (after Young, 1936). All drawn roughly to upper scale, ie) and (/) Gland cells with secre- tory granules () but no histological characters of neurons (drawn to lower scale): {e) cells from corpus cardiacum of beetle, Hydrous (cf. Fig. 2-9 after de Lerma, 1956); (/) cells round blood space () from adrenal medulla of a tetrapod, with "chromaffin" gran- ules () (after Maximow and Bloom, 1942). The differences in quantity of secretion are not characteristic of these cells, but indicate different phases of secretion (cf. Fig. 2-2). {g) Electron micrograph of a highly enlarged section across the axon of a neurosecretory cell from the neurohypophysis of a cat, showing fine granules (Gr) to [x in diameter, and mitochondria (Mit) that are larger (from Bargmann, 1958).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Jenkin, Penelope M. Oxford, New York, Pergamon Press
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjecthormones
