This section examines what it is in the body that triggers the changes of puberty. Students learn about hormones, their function, and the glands that produce them.
Focus on the concept that hormones work with specific receptors on cells. Activity 4-1: Glands and Hormones is a visual representation of this concept.
Have students read the material on the specific hormones of puberty. They may want to take notes during this section so that they can keep all the connections clear and maintain a handy reference.
Discuss the concept of a negative feedback system.
Conclude the section with Activity 4-2: All That Happens at Puberty, which includes a relay demonstrating the way in which all the hormones and glands of puberty work together to create change.
Word Origin: Endocrine, Exocrine Students research the words endocrine and exocrine.
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Why does the body need both a nervous system and an endocrine system to regulate its function?