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The endocrine system student worksheet 1 Name: _______________ Date: ________________ Period: _______________ Study the following graph and discuss the following questions with you partner and write answers. 1. What do you think insulin does in terms of the level of blood glucose concentration? 2. What do you think glucagon does in terms of the level of blood glucose concentration? 3. When the blood glucose concentration level is low, which hormone is secreted? 4. When the blood glucose concentration level is high, which hormone is secreted? Reference Rothery, M. (n.d.). [Illustration]. AQA(B) A2 Module 4 energy, control and continuity contents. Retrieved from http://www.mrothery.co.uk/module4/webnotes/Mod4Notes2ndhalf.htm The endocrine system student worksheet 2 Name: _______________ Date: ________________ Period: _______________ TRH: Thyrotropin-releasing hormone (TRH) TSH: Thyroid stimulating hormone The pictures above show the negative feedback between thyroid stimulating hormone and thyroid hormones T3 and T4 (thyroxine). The negative sign means that it inhibits secretion and the positive sign means it stimulates secretion. 1. What do you think will happen when the thyroid produces too much thyroid hormones (T3 and T4)? (Relate to hypothalamus and pituitary) 2. What do you think will happen when they thyroid produces too little thyroid hormones (T3 and T4)? 3. Write a paragraph explaining how the negative feedback works between Thyroid stimulating hormone and the thyroid hormones. Reference Blomeley, D. (2012). [Illustration]. Metabolic precision. Everything you want to know about thyroid. Retrieved from http://www.metabolicprecision.com/articles-1/everything-you-want-to-know-about-the-thyroid