Hypothalamus and Pituitary Gland

Hypothalamus and Pituitary Gland - Endocrine System...

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Endocrine System Hypothalamus and Pituitary Gland * Hypothalamus- * Controls the pituitary * The major integrating link between the nervous and endocrine system * Receives input from * several regions of the brain * Painful, stressful, and emotional experiences cause changes in hypothalamus activity * Sensory signals from internal organs * retina Hypothalamus and Pituitary Gland (cont) * Hypothalamus controls * Autonomic nervous system * Regulates body temperature * Thirst * Hunger * Sexual behavior * Defense reaction such as fear and rage * Is a crucial endocrine gland * Synthesizes at least nine different hormones Hypothalamus and Pituitary Gland (cont) * Pituitary gland (hypophysis) * Pea shaped structure that lies in the sella turcica of the sphenoid bone * Attaches to the hypothalamus by a stalk called the infundibulum * Has two anatomical and functionally separate parts * Anterior pituitary (anterior lobe)- 70% of weight of gland * Posterior pituitary (posterior lobe) * Contains axons and axon terminals whose cell bodies are located in the hypothalamus
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Hypothalamus and Pituitary Gland - Endocrine System...

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