Jose T M, Sathyanesan A G
Anat Anz. 1977;142(4):424-34.
The paired nucleus preopticus (NPO) lying on either side of the III ventricle gives rise to the left and right main neurosecretory tracts which proceed posteroventrally towards the pituitary and give rise to several finer axons which ramify the infundibular floor adjacent to the pituitary. The bulk of the neurosecretory tracts enter the pars intermedia and few finer ones are seen among the pars distalis. The ventromedian component of the nucleus lateralis tuberis (NLT) is aldehyde fuchsin (AF) positive whereas the anterolateral neurons are AF negative. The internal carotid artery gives rise to the hypophysial and ventral hypothalamic arteries. The ventral hypothalamic artery gives rise to the primary capillary plexus at the infundibular floor region adjacent to the pituitary stalk. Portal vessels formed from this plexus largely irrigate the adenohypophysis. The hypophysial artery enters the neurohypophysis and gives rise to typical teleostean type neuradenointerface vasculature. Morphological contact between the neurosecretory axons and primary capillary plexus at the floor of the infundibulum suggests the possibility of at least some active principles entering the blood vessels. Structurally L. rohita exhibited both tetrapodean and teleostean type of hypothalamo-hypophysial vasculature. Morphological evidences suggest a direct neuroglandular and an indirect neurovasculoglandular pathways of hypothalamic control of hypophysis in L. rohita.
位于第三脑室两侧的成对视前核（NPO）产生左右主神经分泌束，这些束向后腹侧延伸至垂体，并发出几条更细的轴突，这些轴突在垂体附近的漏斗底部分支。大部分神经分泌束进入中间部，在远侧部可见少数更细的束。外侧结节核（NLT）的腹内侧成分呈醛复红（AF）阳性，而前外侧神经元AF阴性。颈内动脉发出垂体动脉和下丘脑腹侧动脉。下丘脑腹侧动脉在靠近垂体柄的漏斗底部区域形成初级毛细血管丛。由该丛形成的门静脉主要为腺垂体供血。垂体动脉进入神经垂体，并产生典型的硬骨鱼型神经腺接口血管系统。漏斗底部神经分泌轴突与初级毛细血管丛之间的形态学接触表明至少有一些活性物质进入血管的可能性。在结构上，露斯塔野鲮表现出四足动物和硬骨鱼型的下丘脑 - 垂体血管系统。形态学证据表明露斯塔野鲮下丘脑对垂体的控制存在直接神经腺和间接神经血管腺途径。
