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Marcello Malpighi

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Marcello Malpighi was a pioneering Italian biologist and physician. He is often called the founder of microscopical anatomy and histology. Histology is the study of tiny tissues in living things. He is also known as the father of physiology and embryology.

Marcello Malpighi. Oil painting. Wellcome V0017987
Marcello Malpighi. Oil painting. Wellcome V0017987

Malpighi changed science by using the microscope to see the hidden world. His work helped us understand how blood flows and how plants grow. Many biological structures are named after him to honor his discoveries.

Malpighi’s most famous work involved studying the circulatory system. In 1661, he discovered capillaries in animal lungs. Capillaries are tiny blood vessels that act as bridges. They connect small arteries to small veins. Before this, scientists like William Harvey knew blood moved, but they could not see the connection. Malpighi used a microscope to observe these microscopic paths.

Frontespizio Marcelli malpighi Opera omnia Londinii 1696-2
Frontespizio Marcelli malpighi Opera omnia Londinii 1696-2

He also studied blood composition and how blood clots. His 1666 treatise, De polypo cordis, explained these processes. He even noted how blood clots differ on the left and right sides of the heart.

Beyond animals, Malpighi made massive discoveries in botany. He studied plants with the same curiosity he used for humans. He noticed that plants have tiny tubules. These are small tubes that look similar to the systems found in insects. He also observed how food moves through a tree trunk. If a ring of bark is removed, the tissue above the ring swells. Malpighi correctly realized this happened because food from the leaves was blocked.

This showed how nutrients travel through a living organism.

Malpighi also explored the world of insects and the brain. Using his microscope, he discovered that insects do not breathe with lungs. Instead, they use tiny holes in their skin called tracheae. He also studied the anatomy of the brain. He concluded that the brain acts as a gland. In modern science, we know this is true because the hypothalamus part of the brain secretes hormones. His ability to see these small details helped create the field of endocrinology.

Malpighi was born on March 10, 1628, in Crevalcore, Italy. He was educated at the University of Bologna. His mother, Frances Natalis, encouraged him to study physics. He earned doctorates in medicine and philosophy in 1653. Throughout his life, he held many important teaching roles. He taught at the University of Pisa and the Academy of Messina.

Marcello Malpighi. Oil painting. Wellcome V0017987
Marcello Malpighi. Oil painting. Wellcome V0017987

In 1691, Pope Innocent XII invited him to Rome. There, he became a papal physician and professor of medicine.

His scientific legacy is visible in many names used today. Several parts of the body are named after him. These include the Malpighian corpuscles in the kidneys and the spleen. There are also Malpighian tubules in the excretory systems of insects. In the skin, there is a layer called the Malpighi layer.

These names remind us that his observations were the first of their kind. His work helped move medicine from old stories toward experimental science.

Malpighi was a member of the Royal Society of London. He joined in 1669 after corresponding with Henry Oldenburg. The Society published many of his botanical and zoological works. They released volumes in 1675, 1679, and 1687. He also wrote the famous Anatome Plantarum. He preferred "rational" medicine, which relies on anatomy rather than just old traditions. He believed the body could often fix its own fluid imbalances.

Frontespizio Marcelli malpighi Opera omnia Londinii 1696-2
Frontespizio Marcelli malpighi Opera omnia Londinii 1696-2

This logical approach was very important for the future of doctors.

Malpighi died on November 30, 1694. He is buried in the church of Santi Gregorio e Siro in Bologna.

Bologna, Marcello Malpighi's tomb
Bologna, Marcello Malpighi's tomb

A large marble monument stands there in his memory. The inscription honors his great genius and his daring love for medical art. His life shows how a single tool, like a microscope, can change everything we know about life. He proved that even the smallest things can hold the biggest secrets.

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🖼️ Images & Media (4)
File:Marcello Malpighi. Line engraving by J. Kip, 1697. Wellcome V0003805.jpg
Marcello Malpighi. Line engraving by J....
File:Marcello Malpighi. Oil painting. Wellcome V0017987.jpg
Marcello Malpighi. Oil painting. Wellcome...
File:Frontespizio Marcelli malpighi Opera omnia Londinii 1696-2.jpg
Frontespizio Marcelli malpighi Opera...
File:Bologna, Marcello Malpighi's tomb.JPG
Bologna, Marcello Malpighi's tomb.JPG
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