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Human endocrine system


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Human endocrine system

  1. 1. A A B C D F E
  2. 2. Pituitary gland Thyroid Parathyroid Adrenal Pancreas Ovary Testes
  3. 3. Pituitary gland Master gland: controls secretions of other glands. Several hormones. Ex. Growth hormone, FSH, TSH, LH, ACTHThyroid Secretes thyroxine: regulates rate of metabolism. Influenced by Thyroid-stimulating hormone(TSH) of the pituitary gland.Parathyroid Embedded in the thyroid: parathyroid hormone regulates calcium and phosphate metabolismAdrenal Adrenalin & noradrenalin: produce emergency response reaction. Produces corticosteroids ( cortisol and cortisone)Pancreas Cells called islets of Langerhans – secretes insulin (lowers blood glucose levels) & Glucagon (raises glucose levels)Ovary Estrogen :female characteristics. Progesterone and Estrogen regulate the menstrual cycleTestes Male sex hormones(androgens) :Testosterone- male characteristicsHypothalamus Part of the brain; stimulates the pituitary gland; link between the nervous and endocrine system.
  4. 4. A Hypothalamus B Pituitary Gland C TSH D Thyroid GlandHormone action
  5. 5. Helps convert glycogen to glucose- as neededSecreted Glucoseby pancreas Glucose Helps remove Excess blood glucose Glucose used Glucose stored Glucose absorbed (respiration) (as glycogen) (by diffusion)
  6. 6. Negative Feedback
  7. 7. Gland Hormones Secreted by the gland Basic functions of the hormones secreted by the glands Regulates the release of energy in the human body Thyroid secrets Thyroxinethyroid and Parathyroid and the parathyroid regulates levels of calcium ions and phosphate ions in Parathyroid secrets Parathyroid Harmone(PTH) the blood. This glands secrets a number of Hormones-namely: Growth Hormone (GH, somatotropin), Thyroid- Regulates growth of the skeletonPituitary stimulating Hormone(TSH) controls the release of hormones from other glands (in particular sexin the brain Adrenocorticotropic Hormone(ACTH), Follicle- glands) Stimulating Hormore(FSH) controls kidney function and water reabsorption. Luteinizing Hormone (LH), and Prolactin Increases heartbeat, blood flow and the amount of sugar in the blood, This gland secretes Epinephrine and Adrenals activates the nervous system when the system is under stress; Norepinephrine regulates water and mineral balance in body tissues, and inhibits digestion. From itself and its islets of Langerhans, allows liver to store sugar; Pancreas this gland secretes regulates bodys use of sugar, Insulin and Glucagon stimulates glucose uptake, triggers breakdown of glycogen into glucose. Pineal secretes Melatoin, that is secreted in the absence of light The Pineal gland controls circadian rhythms and sexual activityPineal and hypothalamus while the hypothalamus secretes releasing and while the hypothalamus gland coordinates visceral activites such as solute- in the brain inhibiting hormones, water balance, temperature control, carbohydrate metabolsim. such as Oxytocin and Antidiuretic hormone(ADH, vasopressin) Controls development of male gametes and male scondary sex Testes The Male gonads secretes Testosterone characteristics Controls female secondary sex characteristics, development of female Ovaries The female gonads secretes Progesterone and Estrogen sexual functions.