9.2 POJA-L2759+La0213+2760
Title: Fetal development of the human hypophysis
Description:
Brain, stain hematoxylin-eosin, human fetus. (A, B, C): Different enlargements of the developing hypophysis or pituitary gland.
(1) Rathke's pouch. (4) Developing sphenoid bone.
(2) Floor of the Diencephalon. (5) Developing tongue muscles.
(3) Diencephalon.
During fetal development, the boundary epithelial ectoderm in the roof of the pharynx forms a pocket (Rathke's pouch),
that comes into contact with the ectoderm of developing brain.
The hypophysis is located within a small bone cave of the sphenoid (the sella turcica or Turkish saddle) that is going to be
formed by the mesenchymal cell types in (4). The developing brain tissue (cerebrum) is indicated by (3).
The dual origin of the hypophysis, i.e. neuroectoderm and the ectoderm of the roof of the mouth create anatomically
the neurohypophysis (pars nervosa, 2) and the adenohypophysis (pars distalis, 1) and an intermediate small part called
the pars intermedia, between (1) and (2).
Keywords/Mesh: hypophysis, fetus, development, pituitary, hypothalamus, diencephalon, histology, POJA collection
Title: Fetal development of the human hypophysis
Description:
Brain, stain hematoxylin-eosin, human fetus. (A, B, C): Different enlargements of the developing hypophysis or pituitary gland.
(1) Rathke's pouch. (4) Developing sphenoid bone.
(2) Floor of the Diencephalon. (5) Developing tongue muscles.
(3) Diencephalon.
During fetal development, the boundary epithelial ectoderm in the roof of the pharynx forms a pocket (Rathke's pouch),
that comes into contact with the ectoderm of developing brain.
The hypophysis is located within a small bone cave of the sphenoid (the sella turcica or Turkish saddle) that is going to be
formed by the mesenchymal cell types in (4). The developing brain tissue (cerebrum) is indicated by (3).
The dual origin of the hypophysis, i.e. neuroectoderm and the ectoderm of the roof of the mouth create anatomically
the neurohypophysis (pars nervosa, 2) and the adenohypophysis (pars distalis, 1) and an intermediate small part called
the pars intermedia, between (1) and (2).
Keywords/Mesh: hypophysis, fetus, development, pituitary, hypothalamus, diencephalon, histology, POJA collection