Lab 7 - The Endocrine System, The Heart and Circulatory S07

Lab 7 - The Endocrine System, The Heart and Circulatory S07...

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The Endocrine System, The Heart and Circulatory System
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Endocrine System
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Endocrine System Endocrine glands - “ductless glands” release hormones into surrounding tissue fluid Hormones - chemical substances that regulate the metabolic function of cells
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Pituitary Gland Pituitary Gland Secretes hormones (9) Growth hormone: promotes protein synthesis and lipolysis Infundibulum: connects pituitary to hypothalamus superiorly Anterior Lobe: glandular Made of glandular tissue Can manufacture and release hormones Posterior Lobe: neural It releases neurohormones it receives from the hypothalamus “Hormone storage area” (not true endocrine “gland”) ADH: secreted from posterior pituitary helps maintain water balance by decreasing urine production
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Thyroid and Parathyroid Glands Thyroid Gland: Located in the anterior neck (butterfly) The largest endocrine gland Secretes thyroid hormone (T3, T4) and other major metabolic hormones Increases metabolic rate and body heat Helps maintain body heat when its cold outside Parathyroid Glands: Posterior thyroid Parathyroid hormone controls the calcium balance in the blood by regulating renal calcium uptake
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Pancreas Pancreas: posterior to stomach Pancreatic islet cells produce α and β cells α cells make glucagon to increase blood sugar β cells produce insulin which lowers blood sugar Act to regulate blood glucose levels
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Lab 7 - The Endocrine System, The Heart and Circulatory S07...

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