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Lesson 1 | How Hormones Communicate
This lesson explains what it means to be a hormone and three types of hormone signaling: autocrine, paracrine, and endocrine (polar and non-polar hormones).
2 | Endocrine Organs
3 | HPT Axis Feedback Loop
This second video shows how doctors use hormone levels and the HPT axis to diagnose disorders like Graves’ disease and thyroid tumors.