Mature Human Egg
Puberty and Emotions
Close-up of Human Egg
A Teenage Girl
Teenage Girl Looks Upset
Major Hormones, Glands and Target Tissues
Major Endocrine Organs (labeled)
Major Endocrine Organs (unlabeled)
Hormone at Receptor (labeled)
Hormone at Receptor (unlabeled)
These amazing crystals are hormones.
From before we're even born, we make these chemicals inside our bodies, and they have a powerful control over us.
They are chemical messengers that communicate between different organs and are a vital part of how our bodies function.
They regulate everything from our metabolism and our ...
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