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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]
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.
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.
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 posterior pituitary (or neurohypophysis) is a lobe of the gland that is functionally connected to the hypothalamus by the median eminence via a small tube called the pituitary stalk (also called the infundibular stalk or the infundibulum).
The floor of interpeduncular fossa, from behind forward, [citation needed] are the posterior perforated substance, [2] corpora mamillaria, tuber cinereum, infundibulum, and pituitary gland. [ citation needed ]
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 .
The diaphragma sellae forms a central opening to accommodate the passage of the pituitary stalk (infundibulum) [1] which interconnects the pituitary gland and the hypothalamus. The diaphragma sellae is an important neurosurgical landmark.