Pituitary gland: Difference between revisions

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75% of the gland
75% of the gland<br>
Ectodermal origin from roof of the stomodeum
Ectodermal origin from roof of the stomodeum<br>
Three components:
Three components:
# Pars tuberalis includes <br> Portion of the infundibular stalk <br>Median eminence of hypothalamus
# Pars tuberalis includes <br> Portion of the infundibular stalk <br>Median eminence of hypothalamus

Revision as of 00:32, 5 March 2024

Pituitary gland is located within the sella turcica of the sphenoid bone.

Anterior and posterior pituitary lobe

Adenohypophysis Neurohypophysis

75% of the gland
Ectodermal origin from roof of the stomodeum
Three components:

  1. Pars tuberalis includes
    Portion of the infundibular stalk
    Median eminence of hypothalamus
  2. Pars intermedia
  3. Pars distalis: majority of the gland, has no direct arterial supply

25% of the gland Diencephalic origin Three components:

  1. Pars nervosa (posterior lobe)
  2. Infundibulum
  3. Nuclei (supraoptic and paraventricular)