THE INNERVATION OF THE AVIAN HYPOPHYSIS
| Autor: | Glenn A. Drager |
|---|---|
| Rok vydání: | 1945 |
| Předmět: | |
| Zdroj: | Endocrinology. 36:124-129 |
| ISSN: | 1945-7170 0013-7227 |
| DOI: | 10.1210/endo-36-2-124 |
| Popis: | NUMEROUS investigations have indicated that certain visual stimuli modify the gonadotropic functions of the anterior lobe of the avian hypophysis. It has often been observed that regularly increased periods of daily illumination activates the dormant avian gonads during periods when they are normally quiescent. Excellent reviews of the literature regarding the effects of light upon birds are those of Bissonnette (1938) and of Brooks (1940). Most investigators have concluded that the eyes are the sole receptors for the light stimuli and have reasoned that nerve impulses pass by way of the optic nerves and hypothalamus to influence the pars distalis of the hypophysis. However, few reports concerning the innervation of the avian pituitary gland are in the literature. Considerable disagreement exists as to the question of whether nerve fibers of the hypothalamico-hypophyseal system innervate the pars distalis of any species. |
| Databáze: | OpenAIRE |
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