Abstract
Data on the functional morphology of the hypothalamic-pituitary neurosecretory system of cats during the stimulation of the cervical sympathetic nerve and afferent fibers of the vagus nerve are described. Stimulation of the sympathetic nerve selectively activates the supraoptic nucleus and causes a discharge of neurohormones from the posterior lobe of the pituitary, whereas the infundibular part of the gland contains large amounts of neurosecretory material. In response to stimulation of the vagus nerve all parts of the neurohypophysis are cleared of Gomori-positive material; both the supraoptic and the paraventricular nuclei are activated.
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