Pituitary & Embryology
This structure is derived from an upward evagination of the hypophyseal diverticulum, also known as Rathke’s pouch.
What is the Adenohypophysis?
The hypophyseal portal system facilitates this type of signaling, allowing hormones to travel from the hypothalamus to the anterior pituitary without entering systemic circulation.
What is Neuroendocrine signaling?
This vestigial remnant of the thyroid’s migratory path is the most common evidence of its descent from the pharyngeal floor.
What is the Pyramidal lobe?
When present as an anatomical variant, the Thyroid IMA artery most frequently arises from this major vessel.
What is the Brachiocephalic trunk?
During a Whipple procedure, surgeons note this vessel running posterior to the neck of the pancreas to form the hepatic portal vein.
What is the Superior mesenteric vein?
This anatomical region is home to the primary capillary plexus of the hypophyseal portal system.
Median eminence?
Both the infundibulum and the neurohypophysis are embryologically derived from this germ layer.
What is Neuroectoderm?
The inferior parathyroid glands find their embryological origins in this specific structure.
What is the Third pharyngeal pouch?
During development, the adrenal cortex is derived from this specific germ layer.
What is Mesoderm?
In the male, these testosterone-producing cells are located inside the tunica albuginea but outside the seminiferous tubules.
What are Leydig (interstitial) cells?
A pituitary adenoma expanding superiorly would most likely first compress this adjacent neural structure.
What is the Optic chiasm?
A pituitary tumor expanding in a lateral direction is most likely to invade this vascular space.
What is the Cavernous sinus?
Parathyroid glands typically receive their primary blood supply from this vessel.
What is the Inferior thyroid artery?
This specific layer of the adrenal cortex serves as the primary site for mineralocorticoid synthesis.
What is the Zona glomerulosa?
During an oophorectomy, the ovarian artery must be ligated within this specific ligament.
What is the Suspensory ligament of the ovary?
These specific tumors typically arise from the vestigial remnants of Rathke’s pouch.
What are Craniopharyngiomas?
This vascular structure provides the primary blood supply to the adenohypophysis via the portal system.
What is the Superior hypophyseal artery?
Anatomically, this gland is situated posterior to both the stomach and the pancreas.
What is the Left adrenal gland?
These two cell types constitute the epithelial cells of the parathyroid gland.
What are Oxyphil and Chief cells?
Histopathological examination of a thyroid nodule revealing laminated, concentric calcified spheres—known as psammoma bodies—is most characteristic of this specific malignancy.
What is Papillary thyroid carcinoma?
This bone forms the sella turcica, providing a protective bony enclosure for the pituitary gland.
What is the Sphenoid bone?
Injury to this structure during a total thyroidectomy likely caused a patient’s postoperative hoarse, breathy voice.
What is the Recurrent laryngeal nerve?
This specific vessel drains the right adrenal gland directly into the inferior vena cava.
What is the Right suprarenal vein?
While the pancreas forms from two buds, this specific adult structure is uniquely derived from the ventral bud.
What is the Uncinate process?
Within the Islets of Langerhans, this specific cell type is the most numerous and is typically clustered in the center of the islet.
What are Beta cells?