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Ibn Abi al-Ashʿath (; died 975 CE) was a
Persia Iran, officially the Islamic Republic of Iran (IRI) and also known as Persia, is a country in West Asia. It borders Iraq to the west, Turkey, Azerbaijan, and Armenia to the northwest, the Caspian Sea to the north, Turkmenistan to the nort ...
n physician of medieval Islam. He wrote many commentaries on
Galen Aelius Galenus or Claudius Galenus (; September 129 – AD), often Anglicization, anglicized as Galen () or Galen of Pergamon, was a Ancient Rome, Roman and Greeks, Greek physician, surgeon, and Philosophy, philosopher. Considered to be one o ...
's works. He died in Mosul, Iraq.


Physiology

Ahmad ibn Abi al-Ash'ath described the physiology of the stomach in a live lion in his book ''al-Quadi wa al-muqtadi''. He wrote:
When food enters the stomach, especially when it is plentiful, the stomach dilates and its layers get stretched...onlookers thought the stomach was rather small, so I proceeded to pour jug after jug in its throat…the inner layer of the distended stomach became as smooth as the external peritoneal layer. I then cut open the stomach and let the water out. The stomach shrank and I could see the pylorus…
Ahmad ibn Abi al-Ash'ath observed the physiology of the stomach in a live lion in 959. This description preceded William Beaumont by almost 900 years, making Ahmad ibn al-Ash'ath the first person to initiate experimental events in gastric physiology.


Works

His works include: *الأدوية المفردة *الحيوان *العلم الالهي *الجدري و الحصبة و الحميقاء *السرسام و البرسام و مداواتهما *القولونج و أسبابه و مداواته *البرص و البهق *الصريح *الاستسقاء *ظهور الدم * الماليخوليا * تركيب الأدوية * أمراض المعدة و مداواتها


References

{{Islamic medicine 10th-century Iranian physicians 975 deaths Year of birth unknown Date of birth unknown