The human endocrine system
Chemical messengers of the body
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The master controllers
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Metabolism and energy
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Stress and survival
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YOUR GOAL
Master of The human endocrine system
teacher A chemical messenger inside your flow, Finding the right lock to make your systems grow.
Hormone naming history: The word hormone comes from the Greek 'hormon', which literally means 'to set in motion' or 'to excite'.
A regulatory substance produced in an organism and transported in tissue fluids to stimulate specific cells or tissues. English physiologist Ernest Starling coined the term in 1905 while describing these internal secretions.
Who coined the term 'hormone' in 1905 from a Greek word meaning 'to excite' or 'to arouse'?
Which chemical messenger was the very first hormone discovered by scientists in 1902?
What is the primary method hormones use to travel to distant target organs in the human body?
In which country did healers extract active hormones from human urine as early as the 10th century?
What term describes the cellular structure that a hormone must bind with to trigger a response?
What physical property determines whether a hormone can pass directly through a cell membrane?
