Hormones and the Endocrine System 26.1 Chemical and electrical signals coordinate body functions The Endocrine System is a group of interacting glands and tissues throughout the animal body that produce and secrete chemical to initiate and maintain body functions and activities. Chemical Signals -Hormones - are released into the bloodstream by endocrine cells and carried to all locations in the body Consists of all hormone secreting cells Works with the nervous system in regulating body activities
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Week 14 Study Guide – The Endocrine System 1) What are hormones? Chemicals that are released to influence bodily functions. 2) How are hormones transported? Via bloodstream. 3) Why is the pituitary gland called the “Master” gland? Controls other glands and produces many hormones. 4) What are the two segments of the pituitary? Posterior and anterior pituitary. 5) Where is the thyroid gland located? Anterior to neck‚ inferior to larynx. 6) What are the symptoms of myxedema
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hGH - Human Growth Hormone 1. Produced by Anterior Pituitary Gland 2. Targets of hGH are Bone‚ muscle‚ skin‚ adipose tissue and liver 3. Effects of hGH are to promote protein synthesis‚ encourage use of fats for fuel‚ and elevate blood glucose by decreasing uptake and increasing glycogen breakdown 4. Regulation of hGH is hormonal 5. hGH is a protein 6. hGH is water soluble 7. hGH is protein kinase activation 8. Endocrine disorders - Hyper secretion causes Giantism in children and Acromegaly
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Resting metabolic rate can vary with age independently from body mass changes in the Colorado potato beetle‚ Leptinotarsa decemlineata. Abstract A study was done by Saija Pironine‚ leena Lindstrom‚ and Anne Lyytinen in the Journal of Insect Physiology‚ to investigate the age dependence of resting metabolic rate in Colorado potato beetle (Leptinotarsadecemlineata) from adult emergence until age 10 days. In their hypothesis they expected to see a bell shaped pattern in metabolic rate with adult age
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Endocrine System: Biochemistry‚ Secretion and Transport of Hormones 1. Place the following hormones into one of the three categories of hormones (peptides‚ amines or steroids): T4 (thyroxin)‚ estradiol‚ norepinephrine‚ insulin‚ aldosterone‚ glucagon‚ cortisol‚ growth hormone‚ T3 (triiodothyronine)‚ epinephrine‚ testosterone and vasopressin (ADH). |Peptides |Amines |Steroids | |Insulin
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Lab 1 – Exercise 4: Endocrine System ACTIVITY 1: Metabolism and Thyroid Hormone Part 1: Chart 1: Effects of Hormones on Metabolic Rate Normal Rat Thyroidectomized Rat Hypophysectomized Rat Baseline Weight Ml O2 used in 1 minute Ml O2 used per hour Metabolic rate Palpation results 250 grams 7.1 ml 426ml 1704 ml O2/kg/hr NO MASS 245 grams 6.3 ml 378 ml 1542.86 ml O2/kg/hr
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third ventricle of the brain Pineal Gland Produces amine hormone melatoin Thyroid-stimulating hormone (TSH) or thyrotropin Follicle-stimulating hormone (FSH) and Luteinizing hormone (LH) gonadotropins Posterior Pituitary (neural tissues) Neurohypophysis Adrenocorticotropic hormone (ACTH) corticotropin Prolactin (PRL) Growth hormone (GH) Oxytocin Antidiuretic hormone (ADH) Stimulates growth and energy metabolism requires intermediary
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Study Guide‚ Chapter 16 The Endocrine System Endocrine System: Overview Acts with nervous system to coordinate and integrate activity of body cells Influences metabolic activities via hormones transported in blood Response slower but longer lasting than nervous system Endocrinology Study of hormones and endocrine organs Endocrine System: Controls and integrates Reproduction Growth and development Maintenance of electrolyte‚ water‚ and nutrient balance of blood Regulation of
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ENDOCRINE SYSTEM 1) KNOW ALL OF THE ENDOCRINE GLAND & HOROMONES * Hypothalamus Although it is part of the brain‚ the hypothalamus secretes several hormones and is very closely related to the activity of the endocrine system. * The hormones it secretes are: * Releasing hormones – stimulate the secretion of specific anterior pituitary hormones * Release inhibiting hormones – inhibit the secretion of specific anterior pituitary hormones Pituitary * A small
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The Endocrine System FOCUS: The endocrine system is one of the major regulatory systems in the body‚ along with the nervous system. However‚ the endocrine system responds more slowly‚ and has a longer-lasting‚ more general effect on the body than the nervous system. Endocrine tissues internally produce hormones which are released into the blood‚ where they are carried to target tissue and produce a response. Some hormones bind to receptors on the surface of the cell membrane‚ producing permeability
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