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15 Cards in this Set
- Front
- Back
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Hypothalamus |
Controls emotional states Assists in regulation of fat, carbohydrate and water metabolism Influences body temp, genital function, sleep and food intake controls pituitary hormone release |
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Connection of Hypothalamus to Hypophysis Cerebri (pituitary gland) |
Connected to pituitary gland in two ways: 1. nerve fibers from supraoptic and paraventricular nuclei to Posterior Pituitary lobe 2. Long and short portal blood vessels *allows hypothalamus to influence endocrine gland activity* |
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Supraoptic Nucleus |
Synthesizes vasopressin (ADH, antidiuretic hormone) It acts as an osmoreceptor |
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Paraventricular nucleus |
Synthesizes Ocytoxcin |
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Vasopressin (ADH) function |
Vasoconstriction and increases water absorption by the kidneys |
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Oxytocin |
Stimulates contraction of smooth muscle of uterus and myoepithelial cells around alveoli of mammary glands |
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Preoptic and Anterior nuclei |
Control parasympathetic System |
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Posterior and Lateral nuclei |
Control Sympathetic System |
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Anterior hypothalmic nuclei |
Regulate temperature |
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Lateral hypothalmic nuclei |
*Hunger and Thirst Center* initiate eating and increases food and water intake |
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Medial hypothalmic nuclei |
*Satiety center* Inhibit eating and Reduces food intake |
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Suprachiasmatic Nucleus |
Controls Circadian Rhythm |
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Hypophysial Portal system |
Carries hormones and release inhibiting hormones made by the hypothalamus, to the secretory cells of the anterior lobe of the hypophysis |
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Hypothalamus release stimulating hormones |
ACTH FSH LH TSH GH |
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Hypothalamus release Inhibiting hormones |
MSH LTH/Prolactin --> stimulates mammary glands to make milk Somatostatin --> Inhibits GH Progesterone |
