1. Consider the endocrine system and hormones.
a)What are the three general chemical classes of hormone?____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
b)List the THREE physiological functions of the thyroid hormone.____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
c)How are thyroid hormones transported in the bloodstream? Why? Dothe hormones enter the target cell directly? Describe the sequenceof events when thyroid hormones bind to their receptors.
