Larger cell body Longer axon projections >> extend to neurohypophysis (posterior lobe)

Smaller cell body Shorter axon projections >> portal system Hypophysiotropic hormones >> anterior lobe

Neuroendocrinology & the Hypothalamus-Neurohypophysis System (HNS) Flashcards by Ashley Mirafuentes

Hypothalamus

ultimate homeostatic control
generates response and releases hormone

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Neurosecretory cells

neurons that secrete molecules into the blood stream to act as hormones

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Hypophyseal Portal system ( median eminence)

net of capillaries
tiny blood vessels that take neurons to anterior pituitary
- functional connection

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Magnocellular

Larger cell body
Longer axon projections&raquo_space; extend to neurohypophysis (posterior lobe)

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Parvocellular

Smaller cell body
Shorter axon projections&raquo_space; portal system
Hypophysiotropic hormones&raquo_space; anterior lobe

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Vasopressin

AVP/ADH
and Oxytocin

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Paraventricular Nucleus (PVN)

contains MC and PC

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Supraoptic Nucleus (SON)

contains only MC

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Anterior Pituitary cell types

Somatotrophs : GH
Lactotrophs: PSL
Thyrotropes: TSH
Gonadotrophs: FSH/LH
Corticotropes: ACTH in response to CRH

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Neuroendocrinology & the Hypothalamus-Neurohypophysis System (HNS) Flashcards

Connection between nervous system and hormone system & posterior pituitary gland (9 cards)