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The pituitary stalk, also known as the infundibular stalk, infundibulum, or Fenderson's funnel, is the connection between the hypothalamus and the posterior pituitary, the posterior lobe of the pituitary gland.
Tuberoinfundibular pathway shown in opaque blue, connecting that hypothalamus with the pituitary gland. The tuberoinfundibular pathway refers to a population of dopamine neurons that project from the arcuate nucleus (a.k.a. the "infundibular nucleus") in the tuberal region of the hypothalamus to the median eminence. [1]
Hair follicle: the infundibulum is the cup or funnel in which a hair follicle grows. Infundibulum (heart): The infundibulum of the heart, or conus arteriosus, is the outflow portion of the right ventricle. Lung: The alveolar sacs of the lungs, from which the air chambers (alveoli) open, are also called infundibula.
The tuber cinereum is a convex mass of grey matter, [3]: 495 a ventral/inferior distention of the hypothalamus forming the floor of the third ventricle. [citation needed] The portion of the tuber cinerum at the base of the infundibulum (pituitary stalk) is the median eminence; [2] the infundibulum extends ventrally/inferiorly from the median eminence to become continuous with the infundibulum.
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"Infundibular" in the word "tuberoinfundibular" refers to the cup or infundibulum, out of which the pituitary gland develops. regulation of prolactin secretion [10] hyperprolactinaemia [10] Hypothalamospinal tract: The tuberoinfundibular pathway not only regulates hormonal balance but also influences locomotor networks in the brainstem and ...
The portion of the floor immediately posterior of the optic chiasm distends inferiorly, and slightly anteriorly, to form a funnel (the infundibulum); the recess leading to the funnel is known as the infundibular recess. The border of the funnel is the tuber cinereum, which constitutes a bundle of nerve fibres from the hypothalamus.
The arcuate nucleus of the hypothalamus (ARH), [1] or ARC, [2] is also known as the infundibular nucleus to distinguish it from the arcuate nucleus of the medulla oblongata in the brainstem. [1] The arcuate nucleus is an aggregation of neurons in the mediobasal hypothalamus , adjacent to the third ventricle and the median eminence .