Term
Hypophysis
adenohypophysis
neurohypophysis |
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Definition
pituitary gland
anterior pituitary- vascular link
posterior pituitary- neural link |
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Term
infundibulum
Hypothalamohypophysial portal system
hypothalamohypophysial tract |
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Definition
1)connects hypothalamus to post pituitary
2)connect hypothalmus to anterior pituitary, transports releasing/inhibiting hormones through blood to sinuses of anterior lob
3) nerves that connect hypothal to post pituitary |
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Term
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Definition
| Thalamus (dorsal) and Hypothalamus (ventral) |
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Term
Hypothalamus
1)mammillary bodies
2) infundibulum
3) Tuber cinereum |
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Definition
regulation of homeostasis
1) bulges on ventral surface- olfactory reflexes and emotional response to odors
2) control endocrine, connects hypothalamus to posterior pituitary
3)circadian clock- histamine |
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Term
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Definition
appetite, fluid balance, electrolyte balance, glucose, metabolism, sleeping, sexual behavior, body temp
integrates fxn of endocrine, autonomic, somatic motor, and limbic |
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Term
| Integrative Function of Hypothalamus |
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Definition
neurons respond to non-neural input
intrinsic sensory neurons
median eminence- all receptors, blood brain barrier |
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Term
| Hypothalamic Regions (rostral-->caudal) |
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Definition
preoptic
supraoptic
tuberal
mamillary |
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Term
| Hypothalamic zones (medial-->lateral) |
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Definition
periventricular
medial
lateral |
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Term
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Definition
controls release of reproductive hormones from adenohypophysis
preoptic and periventricular nuclei
medial preoptic nucleus
lateral preoptic nucleus |
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Term
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Definition
nuclei function in control of circadian rhythms, temp, control of water balance
suprachiasmatic and periventricular nuclei
anterior hypothalamic, paraventricular, suproptic nuclei
Lateral Hypothalamic nucleus |
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Term
| Suprachiasmatic nucleus (periventricular zone) |
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Definition
Circadian clock
visual info from axons arising from retins |
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Term
| Anterior hypothalamic nucleus (medial zone) |
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Definition
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Term
| paraventricular and supraoptic nuclei (medial zone) |
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Definition
most abundant supply of blood supply to brain
synthesize ADH and oxytocin
transported to neurohypophysis |
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Term
| Hormones of Posterior Pituitary: ADH/vasopressin |
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Definition
Supraoptic nucleus
osmorecepetors: if concentration of electrolytes increase or concentration of water decrease ADH stimulated
baroreceptors: If BP decreases ADH stimulated |
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Term
| Hormones of Posterior Pituitary: Oxytocin |
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Definition
Paraventricular nucleus
stimulates contraction of smooth mm of uterus and causes contraction of breast lactation |
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Term
| Posterior Pituitary Hormones: Cortisol |
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Definition
CRH-ACTH-Cortisol
anti-inflammatory
acts to increase fat and protein breakdown and increase glucose levels and anti-inflammatory effects
negative feedback effect- inhibits CRH release from hypothal and ACTH secretion from ant pituitary |
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Term
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Definition
control of anterior pituitary gland hormone release, caloric intake, appetite
Arcuate Nucleus
Dorsomedial/Ventromedial nuclei
Lateral hypothalamic Nucleus |
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Term
| Arcuate nucleus (periventricular zone) |
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Definition
| produce hypothalamic releasing hormones and carries to infundibulum to pass into hypophyseal portal system |
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Term
| Dorsomedial nucleus (medial zone) |
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Definition
| releases TRH in anterior pituitary (increases aggression) |
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Term
| Ventromedial nucleus (medial zone) |
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Definition
satiety center
cells sensitive to blood glucose levels to monitor caloric intake |
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Term
| Lateral Hypothalamic nucleus (lateral zone) |
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Definition
| control of appetite- induces eating when stimulated |
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Term
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Definition
emotions
posterior hypothalamic nucleus=
mammillary body |
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Term
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Definition
| traget for projection of hippocampus via fornix to relay info related to emotions |
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