Topic 9.4 · General Science · Human Body
Endocrine System & Hormones is studied as part of "Human Body" (Biology) in General Science. The organ systems of the human body — digestion, circulation, respiration, excretion, nerves and hormones — are a high-yield biology area.
In the examination context, endocrine system & hormones carries conceptual questions that test both factual recall and analytical understanding. Revise this topic in sequence with the rest of the chapter so that chronological and thematic links are clear.
| 1921 | Insulin discovered |
| 1901 | Landsteiner discovered ABO blood groups |
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