BIO310H5 Study Guide - Midterm Guide: Trophoblast, Posterior Pituitary, Human Chorionic Gonadotropin
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Written questions: a person under chronic stress has elevated levels of cortisol and increased insulin. Explain the regulatory pathway that leads to increased blood cortisol. Include the second messenger pathway for cortisol production. Explain why this person also has increased levels of insulin [3 marks intracellular pathways not required] levels. a) b: blood calcium levels are maintained in a very small range. Discuss the coordinated action of vitamin d and parathyroid hormone in regulating blood calcium. Provide details on production, control and mechanisms of action for each of these hormones. [ 5 marks each = 10 marks total] Its secretion is controlled by a negative-feedback system between the concentration of glucose in the blood and the cells that secrete insulin. Chemical regulators are released directly into blood vessels. Chemical regulators released by cells affect cells in the vicinity of the. Chemical regulators affect the same cell that produced it. Chemical regulators reach their site of action through a duct.
