9.2 POJA-L4384+La0216B.
Survey human hypophysis or pituitary gland (I)
9.2 POJA-L4384+La0216B
Title: Survey human hypophysis or pituitary gland (I)
Description:
(A): Semi-schematic drawing of microphotograph hypophysis in (B).
(B): Hypophysis, stain Azan. The human hypophysis or pituitary gland (600-900 mg) is located in bone cave (sphenoid) and surrounded
by a thin connective tissue capsule (2). The larger adenohypophysis or anterior lobe or pars distalis (3) is derived from the ectodermal
roof of the pharynx and has a glandular-like structure.
The smaller neurohypophysis or posterior lobe or pars nervosa (5) is derived from neuroectodermal tissue and connected to the hypothalamus via a stalk (1) comprising the infundibular lobe or pars infundibularis surrounded with eminentia mediana.
Between the adeno- and neurohypophysis one finds colloid (4, 6).
Secretory nerves of nuclei in the hypothalamus end in the pars nervosa and regulate the release of hormones in the hypophysis.
The hypophysis also contains a double portal capillary network, analogous to the one in the liver, but not visible in this survey.
(7) Intermediary zone.
Keywords/Mesh: hypophysis, pituitary gland, adenohypophysis, neurohypophysis, histology, POJA collection
Title: Survey human hypophysis or pituitary gland (I)
Description:
(A): Semi-schematic drawing of microphotograph hypophysis in (B).
(B): Hypophysis, stain Azan. The human hypophysis or pituitary gland (600-900 mg) is located in bone cave (sphenoid) and surrounded
by a thin connective tissue capsule (2). The larger adenohypophysis or anterior lobe or pars distalis (3) is derived from the ectodermal
roof of the pharynx and has a glandular-like structure.
The smaller neurohypophysis or posterior lobe or pars nervosa (5) is derived from neuroectodermal tissue and connected to the hypothalamus via a stalk (1) comprising the infundibular lobe or pars infundibularis surrounded with eminentia mediana.
Between the adeno- and neurohypophysis one finds colloid (4, 6).
Secretory nerves of nuclei in the hypothalamus end in the pars nervosa and regulate the release of hormones in the hypophysis.
The hypophysis also contains a double portal capillary network, analogous to the one in the liver, but not visible in this survey.
(7) Intermediary zone.
Keywords/Mesh: hypophysis, pituitary gland, adenohypophysis, neurohypophysis, histology, POJA collection