Hormones and Metabolism Activity 1: Determining the Baseline Metabolic Rates 1. Which rat had the fastest baseline metabolic rate? Normal rate 2. Why did the metabolic rates differ? Because of the different organs that were removed from the two other rats that would produce certain hormones 3. If an animal has been thyroidectomized‚ what hormone(s) would be missing from its blood? thyroxine 4. As a result of the missing hormone(s)‚ what would the overall effect on the body and metabolism
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Lab 4: Endocrine System Physiology | 1. | | Refer to Activity 1: Determining Baseline Metabolic Rates. How did the baseline metabolic rates of the three rats differ? Answer: | The metabolic rates for the thyroidectomized and hypophysectomized rats were lower than that of the normal rat. | | | 2. | | Why did the metabolic rates differ? Check all that apply: Answers: | The hypophysectomized rat lacked thyroid-stimulating hormone. The thyroidectomized rat lacked thyroxine hormone. |
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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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Cortisol – The Stress Hormone Where is it made? Within the adrenal glands there is a layer around the perimeter of the gland that is known as the adrenal cortex. A portion of the cortex labeled the Zona fasciculata is where the hormone Cortisol produced. The Zona fasciculata is primarily responsible for the production of various Glucocorticoids‚ such as Cortisol. What is it? Cortisol is a corticosteroid hormone it is extremely vital to the body- when released increases both blood pressure
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Lab 28B: Endocrine System Physiology Computer Simulation Introduction The endocrine system is the second greatest control system of the body and has many effects on the tissues and organs. The thyroid gland‚ which is a part of the endocrine system‚ releases a hormone that maintains metabolism. This hormone is thyroxine. Thyroxine production is controlled by thyroid stimulating hormone‚ which is released by the pituitary gland. TSH stimulates the thyroid gland to produce thyroxine. In
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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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NAME LAB TIME/DATE _ Endocrine System Physiology: Computer Simulation Metabolism The following questions refer to Activity 1: Determining Baseline Metabolic Rates. 1. Which rat had the fastest baseline metabolic rate? -------------------------The normal rat 2. Compare the baseline metabolic rates for the thyroidectomized rat and the normal rat and explain your results. The thyroidectomized rat had a lower baseline metabolic rate beause the removal of its thyroid gland prevented it
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The Endocrine System Controls many body functions ~exerts control by releasing special chemical substances into the blood called hormones ~Hormones affect other endocrine glands or body systems Derives its name from the fact that various glands release hormones directly into the blood‚ which in turn transports the hormones to target tissues via ducts. Exocrine glands-transport their hormones to target tissues via ducts. Endocrine glands- secrete hormones into the bloodstream The Endocrine
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main difference between simple diffusion and facilitated diffusion? FACILITATED IS MOVEMENT WITH THE HELP OF CARRIER PROTEINS 3. What is the main difference between facilitated diffusion and active transport? ACTIVE TRANSPORT USES ATP 4. In the “Simple Diffusion” experiment‚ which solute(s) passed through the MWCO 20 membrane? NONE Why? SOLUTES MASSES ARE TO BIG 5. List three examples of passive transport mechanisms. DIFFUSION FILTRATION OSMOSIS 6. Describe the relationship
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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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