Hypophyseal Artery inside the Male Skull

Description

Sectioned male cranial anatomy reveals the hypophyseal artery as a fine-caliber vessel coursing toward the sella turcica, where it contributes to the arterial supply of the hypophysis (pituitary gland). Proximally, the hypophyseal branches arise from the internal carotid artery in the parasellar region, then distribute as superior hypophyseal arteries to the infundibulum and median eminence and as inferior hypophyseal arteries to the posterior lobe. Surrounding context includes the cavernous sinus region lateral to the gland, the clinoid processes superiorly, and the bony confines of the sphenoid body forming the hypophyseal fossa. Small arterioles radiate over the gland surface. Delicate territory. Clinically, this cutaway relationship between the internal carotid artery and hypophyseal vessels matters during transsphenoidal pituitary surgery, where lateral dissection risks cavernous carotid injury and devascularization of the gland. The superior hypophyseal system also intersects endocrine function via the hypophyseal portal circulation supplying the anterior pituitary, so compromise can contribute to postoperative hypopituitarism or diabetes insipidus depending on which supply is affected. A clear depiction of bone grooves and parasellar corridors helps orient the viewer to where vessels lie in close apposition to sphenoid and sellar landmarks. Neurosurgery and ENT skull base teaching modules can pair this plate with operative anatomy of the transnasal, transsphenoidal approach to explain why midline sellar entry and careful lateral limits are emphasized. It also fits neuroanatomy, endocrinology, and radiology publications discussing sellar region vascular variants and perioperative bleeding risk, as a clean reference for the hypophyseal artery network within the cranial cavity. Anatomical accuracy verified by SciePro's Medical Advisory Board.