1) Discuss how hormone levels are regulated in the blood. what mechanism control
ID: 95261 • Letter: 1
Question
1) Discuss how hormone levels are regulated in the blood. what mechanism controls hormonal release? can the method of hormone transport have an affect on blood hormone levels? Explain. where are hormones metabolized? can some types of hormones be stored? if so, where and which kind ?
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2) Discuss the two forces that move sodium and potassium into or out of a cell. if the channels were equal in number , and the cell was halfway between +60mV and -94mV, which ion would have the greatest desire to move in its preferred direction ? why ? is there an advantage for having sodium outside of the cell ? what?
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Explanation / Answer
Parathyroid harmone secreted by the parathyroid glands helps to regulate blood calcium levels.Calcitonin secreted by the thyroid glands inhibits osteoclasts and stimulate osteoblast and help in decreasing blood calcium level.
The endocrine system depends on feedback mechanism to control the harmone level in the circulatory system.
Effect of harmone transport on blood harmone level:
# The transport protein make lipid soluble hormones temporarily watersoluble and increase their solubility.THey also provide a ready reserve of harmone already present in the bloodstream
# They also retard the passage of small hormone molecule through the filtering mechanismin the kidney and thus slow the rate of hormone loss in urine.
Endocrine system: It is the collection of glands that secrete harmones directly into circulatory system.The major glands of the endocrine system are Hypothalamus ( secretes TRH,GHRH,CRH etc ) Pineal gland ( secretes Melatonin ),Pituitary ( secretes GH,TSH,ACTH,FSH etc) ,pancreas , thyroid (T3,T4.calcitonin etc ) , parathyroid and adrenal glands
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