Ibn Abi al-Ashʿath ( ar, أحمد بن محمد بن محمد بن أبي الأشعث; died 975 CE) was a

Persia Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...

n physician of medieval Islam. He wrote many commentaries on

Galen Aelius Galenus or Claudius Galenus ( el, Κλαύδιος Γαληνός; September 129 – c. AD 216), often Anglicized as Galen () or Galen of Pergamon, was a Greek physician, surgeon and philosopher in the Roman Empire. Considered to be one of ...

's works. He died in

Mosul, Iraq Mosul ( ar, الموصل, al-Mawṣil, ku, مووسڵ, translit=Mûsil, Turkish: ''Musul'', syr, ܡܘܨܠ, Māwṣil) is a major city in northern Iraq, serving as the capital of Nineveh Governorate. The city is considered the second larg ...

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 William Beaumont (November 21, 1785 – April 25, 1853) was a surgeon in the U.S. Army who became known as the "Father of Gastric Physiology" following his research on human digestion.

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 *الرسام 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