Claudius Galenus, a Greek physician and philosopher from the Roman Empire, was born in 129 AD in Pergamon and made significant contributions to medicine, including the discovery of blood in human arteries. Known for his experimental approach, he compiled and critiqued the works of predecessors like Hippocrates, while also establishing important medical concepts like the diagnosis of diseases through pulse and urine analysis. Galen's beliefs included some inaccuracies, such as the notion that disease was caused by bad air, and he is believed to have died in Rome around 216 AD.

1. CLAUDIUS GALENUS
- GALEN
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2. WHO IS GALEN?
• Greek physician, surgeon and philosopher
in the Roman Empire
• Born: September 129 AD, Pergamon, Turkey
• Full name: Claudius Galenus
• Nationality: Greek
• Parents: Aelius Nicon
• Died: Rome, Italy
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3. When Galen reached 16,
something remarkable
happened
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4. GALEN MASTER OF MEDICINE
• Compiler, consolidator, critic & a discoverer
• Greek physicians like Hippocrates, Celsus...
• He compared his own experiment with practical findings
• Believed in the power of experiment and observation
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5. GALEN DISCOVER
•He is still known among other things for his
discovery of blood in human arteries and for his
dissection of the human cranial nerves, the
nerves that supply key areas of the head, face,
and upper chest.
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7. CONNECTION
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10. GALENISM
•Diagnosis of disease by: pulse, urine
•Removal of cataract - eyes
•Urine forms in kidney not in bladder
•Arteries carry blood than air
•Discovered four valves of the heart
•Two types of blood i) bright red ii) dark
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11. FAILURES
•Belief that disease is caused by bad air from rotting
animal & plant
•Dark blood in the veins are manufactured in liver
•Microscopic pores in heart connect left & right sides
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12. END
•Galen death are vague
•Scholars believe he died in 216 A.D.
Aged 86-87
•In Rome
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13. REFERENCES
 TN TEXT BOOK
 NCERT READER
 DISCOVERY
 WIKIPEDIA
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