The endocrine system develops quietly, without ducts or obvious boundaries, yet its influence is global. This episode explores how dispersed endocrine organs arise from multiple embryological origins and come to regulate growth, metabolism, and internal balance across the body.

Drawing on IB Singh’s clear sequencing, we trace the embryological origins of key endocrine organs — including the thyroid, parathyroids, adrenal glands, pancreas, pituitary, and gonads. Particular attention is given to migration, interaction, and timing, which explain why endocrine anatomy is so closely linked to developmental vulnerability.

Clinically, this episode shows how errors in endocrine development manifest as disorders of growth, metabolism, and homeostasis — from ectopic thyroid tissue to congenital adrenal hyperplasia and disorders of glucose regulation. By the end, the endocrine system is understood not as a collection of isolated glands, but as a developmental communication network, coordinating the body long before birth.

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