Exclusivpentruuzdidactic -...
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Exclusiv pentru uz didactic
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Glande endocrine
fără duct excretor parenchim organizat în insule, cuiburi, cordoane sau foliculi
vascularizaţie bogată elimină produsul de secreţie în sânge
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Exclusiv pentru uz didactic
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Hipofiza
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Pars distalis
Pars tuberalis
Pars intermedia
Pars nervosa
Infundibulum
Eminenţa mediană
Ross Histology 4th edition
Exclusiv pentru uz didactic
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Hipofiza, col. HE, ob. 4x
Ross HM, Histology: A Text and Atlas, 6th ed.
Pars distalis!Pars nervosa!
Pars intermedia!
Capsulă ț. conj.#
Exclusiv pentru uz didactic
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Ross Histology 4th edition
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Tipuri celulare – cromofile:
– acidofile – bazofile
– cromofobe Capilare sinusoide
Adenohipofiza Exclusiv pentru uz didactic
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Hipofiza – lobul anterior, HE ob. 20x
A – cel. acidofile; B – cel. bazofile; C – cel. cromofobe; Cap – capilare sangvine
Ross HM, Histology: A Text and Atlas, 6th ed.
Exclusiv pentru uz didactic
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Hipofiza – lobul anterior, col. Mallory, ob. 20x și 100x
A#
B#
C#
A – cel. acidofile; B – cel. bazofile; C – cel. cromofobe; Ross HM, Histology: A Text and Atlas, 6th ed.
Exclusiv pentru uz didactic
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Pars intermedia cordoane cu celule bazofile și celule cromofobe resturi din punga Rathke → foliculi
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Exclusiv pentru uz didactic
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Neurohipofiza -‐ structură predominant fibrilară -‐ prelungiri nemielinizate ale neuronilor secretori hipotalamici
-‐ celule stromale – pituicite (~ celule gliale) -‐ corpi Herring -‐ dilataţii axonale, cu granule de secreţie
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Exclusiv pentru uz didactic
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Tiroida
organizată în lobuli
celulele endocrine organizate în foliculi cu coloid
Exclusiv pentru uz didactic
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Tiroida
Tipuri celulare tireocite (celule foliculare) celule C (parafoliculare)
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Exclusiv pentru uz didactic
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capsula zona glomerulară zona fasciculată zona reticulară
CorBcosuprarenala Exclusiv pentru uz didactic
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Zona glomerulară
• Arcuri de cerc, grămezi
• Celule acidofile, mici
CorBcosuprarenala Exclusiv pentru uz didactic
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Zona fasciculată
Cordoane paralele Celule cu citoplasma
vacuolară→spongiocite
CorBcosuprarenala Exclusiv pentru uz didactic
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Zona reticulară
Cordoane → reţea cu ochiuri mici
Celule acidofile, mici
CorBcosuprarenala Exclusiv pentru uz didactic
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Medulosuprarenala Organizare în cordoane – reţea cu ochiuri mari Tipuri celulare: -‐ neuroni modificaţi, cu caracter secretor
-‐ celule ganglionare
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Exclusiv pentru uz didactic
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Epifiza
Organ parenchimatos cu cuiburi şi cordoane celulare
Tipuri celulare celule principale-‐pinealocite celule gliale
Nisip cerebral
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Exclusiv pentru uz didactic
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Pancreasul endocrin
Insule Langherhans Tipuri celulare
prin imunocitochimie
Exclusiv pentru uz didactic