The school nurse has come to talk to your anatomy class about the growing problem with teenage hypertension. Your teacher asks
your class to consider how to investigate the problem at your school. Your lab group is planning to conduct an investigation to test
the effects of various stimuli on blood pressure. Your lab group considers several possible causes of high blood pressure in teenagers.
Which of these variables is NOT testable?

Hormones are chemical molecules produced by endocrine glands. one such endocrine gland is the thyroid gland, which synthesizes the thyroid hormone, which in turn affects the heart muscles. which two statements describe the probable reason for the function of the hormone? the cells in the heart have specific receptors that allow for the intake of hormones. the heart and the endocrine glands have the exact same types of cells. all cells make the same types of hormones. thyroid hormones show their effect on the heart by means of specialized cells. thyroid cells and cardiac cells have different dna.