2 A hormone is best described as a a. chemical released into the extracellular f

Question

2 A hormone is best described as a a. chemical released into the extracellular fluid that affects neighboring cells b. chemical released by a neuron directly onto a target cell. c. chemical released into the bloodstream that typically acts on distant targets. d. All of the above describe hormones. 3 The hypothalamus communicates with the system a. pineal gland b. anterior pituitary gland c. posterior pituitary gland d. parathyroid gland via the hypothalamic-hypophyseal portal 4 True/False: Mark the following statements as true () or false (F). If the statement is false, correct it to ect it to make it a true statement. a. Insulin triggers actions that raise the concentration of glucose in the blood b. Interstitial cells within the testes produce testosterone. c. Aldosterone is the adrenal hormone responsible for the stress response d. Parathyroid hormone triggers actions that lower the concentration of calcium ions in the blood. e. The posterior pituitary produces no hormones of its own. 5 L I ahel Figure 16.11 with the terms below . Thyroid follicle

Explanation / Answer

(3) Ans. Most important function of the hypothalamus is to link the nerves system to the endocrine system via the pituitary gland . Ans is (b)

(2) Ans. Hormones are specific molecules that act as chemical massengers in the body. Ans. is (c)

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