ISSN:
1432-0878
Keywords:
Median eminence
;
Hypothalamo-hypophysial system
;
Frog, Rana catesbeiana
;
Electron microscopy
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary The fine structure of the hypothalamic floor was studied in the frog, Rana catesbeiana. The regions slightly anterior and posterior to the swollen hypothalamic floor part, which has been classically designated as the median eminence, contained neurosecretory axon terminals abutting on the capillary walls. The region relatively far anterior to the swollen part did not show neurosecretory axons terminating on capillary walls. The neural stalk contiguous to the rostral border of the pars intermedia had few neurosecretory axon terminals which end on the terminal portions of the ependymal processes covering the capillary wall. The functional significance of the regional differentiation of the frog neurohypophysis is discussed in connection with the regional differentiation of various secretory cells in the adenohypophysis.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00222110
