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医学史简论( 6)
A Brief History of Medicine
浙江大学医学院 余 海Zhejiang University School of Medicine
文艺复兴和医学:解剖学的发展
William Harvey 1578-1657
Harvey announced his discovery of the circulatory system in 1616 and in 1628 published his work Exercitatio Anatomica de Motu Cordis et Sanguinis in Animalibus (An Anatomical Exercise on the Motion of the Heart and Blood in Animals), and described the pulmonary circulation and systemic circulation
Heart output : 100-150ml x65=10p
With careful observation and quantitative experiments challenged Galen’s theory on the artery and vein
显微解剖学 Microscopic Anatomy
Early 17th century English man Digges and Dutch spectacle maker Zaccharias and Hans Janssen invented first microscopy
Two convex lenses
显微解剖学的发展 Microscopic Anatomy
1610 Galileo worked our the priciples of lenses and made a better instrument with focusing device enlarging for 70 times
显微解剖学的发展 Microscopic Anatomy
马尔比基 1628-1694
Marcello Malpighi (Italian)
Observed biological tissues with microscope as the pioneer of histology and embryology
显微解剖学的发展 Microscopic Anatomy
Malpighian corpuscle ( Malpighian body )
Malpighian Tubules
Malpighian alveoli
Capillaries in frog mesentery
The discovery of capillary, microscopic structure of lung and kidney
显微解剖学的发展 Microscopic Anatomy
虎克 1635-1702
Robert Hooke
显微解剖学的发展 Microscopic Anatomy
The discovery of cell and its naming (cork)
Discovery of compound eyes in insects
显微解剖学的发展 Microscopic Anatomy
Antonie van Leeuwenhoek
1632-1723
A Dutch cloth merchant used new method for grinding and polishing tiny lenses of great curvature which gave magnifications up to 270 diameters
显微解剖学的发展 Microscopic Anatomy
Leeuwenhoek was first to see and describe bacteria as animalcules (tiny animals), became the father of microbiology, he was also first to record microscopic observations of muscle fibers, spermatozoa, and blood flow in capillaries.
Origin of Medicine
Egypt Babylon India China
Greece Rome
Medieval Arabic medicine
Renaissance
Pre-modern medicine
Modern medicine TCM
Western
Med
icine
Premodern Medicine: background
1642-1651 English Civil War (revolution) Replacement of English monarchy with the Commonwealth of England, then with a Protectorate under Lord of Protector Olive Cromwell , James II restoration of monarch ( 1660 ) , William III (Prince of Orange) and Mary II overthrew James II, “Glorious Revolution”(1688 ) “ The Bill of Rights” was passed and established constitutional monarchy( 1689 )
Oliver Cromwell1649.1.30
Trial and execution of Charles I for treason
Premodern Medicine: background
French revolution
"Liberty leading the people" The tripod
近代医学发展的影响因素:资产阶级革命
French Revolution 1789-1799
Execution of Louis XVIJanuary 21, 1793
Storming of Bastille
1793.1.21
Pre-modern Medicine: Industrial revolution
瓦特 1736-1819
James Watt
Steam power - James Watt improved steam engine provided powerful energy for industrial revolutin
The Industrial Revolution was a period in the late 18th and early 19th centuries when major changes in agriculture, manufacturing, production, mining, and transportation had a profound effect on the socioeconomic and cultural conditions in Britain. The changes subsequently spread throughout Europe, North America, and eventually the world. The onset of the Industrial Revolution marked a major turning point in human society; almost every aspect of daily life was eventually influenced in some way.
Pre-modern Medicine: Industrial revolution
(George Stephenson 1781-1848)
and his locomotive ( 1829 )
火车
Locomotive
轮船
Steamer boat
近代医学发展的影响因素:工业革命
珍妮纺纱机Spinner Jenny
The starting point-textile industry
Pre-modern Medicine: Scientific revolution
Isaac Newton 1642-1727
Laws of Motion:
1.First law: Law of Inertia
2.Second law F=ma
3.Third law:
Action=Reaction
Universal Gravitation
First law: If there is no net force on an object, then its velocity is constant. The object is either at rest (if its velocity is equal to zero), or it moves with constant speed in a single direction.[
Second law: The acceleration a of a body is parallel and directly proportional to the net force F acting on the body, is in the direction of the net force, and is inversely proportional to the mass m of the body, i.e., F = ma.Third law: When a first body exerts a force F1 on a second body, the second body simultaneously exerts a force F2 = −F1 on the first body. This means that F1 and F2 are equal in magnitude and opposite in direction.
Pre-modern Medicine: Scientific thinking & methodology (“Enlightenment”) Descartes' rationalism and Bacon's empiricism had to be combined to produce the modern scientific method
培根 Francis Bacon 1561-1626
According to Bacon, scientists should experiment freely and collect facts about everything in the world, until in due time the accumulation of facts would make clear the way nature behaves. From the storehouse of accumulated facts,
scientists would induce the laws of nature. (inductive methodology ) Knowledge itself is power
笛卡儿 Rene Descartes 1596-1650
According to Descartes, scientists should deduce the laws of nature by pure reason, starting from the axioms of mathematics and our knowledge of the existence of God. Experiments needed to be done only to verify that the logical deduction of the laws of
nature was correct. (deductive methodology) His aphorism is I think therefore I am
Pre-modern medicine: chemical school ( Iatrochemie )
Flemish physician, philosopher, mystic, and chemist
van Helmont demonstrated that acid was the digestive element in the stomach and was neutralized by alkali in the intestine and that blood combined with a “ferment from the air”.
His theory of “ferments” as the agents bringing about physiological processes is a crude precursor of the idea of enzymes
(fermentum). Jan Baptista van Helmont (1580 -1644)
Pre-modern medicine: chemical school ( Iatrochemie )
Franciscus Sylvius (1614-1672)
He was professor of medicine at the University of Leiden, Holland
He believes that all life and disease processes are based on chemical actions. That school of thought attempted to understand medicine in terms of universal rules of physics and chemistry. Sylvius also introduced the concept of chemical affinity as a way to understand the way the human body uses salts and contributed greatly to the understanding of digestion and of bodily fluids.
Pre-modern medicine: physical school ( Iatrophysics )
Alfonso Borelli
1608-1679
Italian physiologist, physicist and mathematician father of modern biomechanics
Pre-modern medicine: physical school
Julien Offray de La Mettrie
美特里 1709-1751
。
French physician and philosopher,
materialists of the enlighterment. He is
best known for his work L’homme
machine (Man a machine published
anonymously 1747), wherein he
claimed that human beings were
machines.
( Iatrophysics )
Three major discoveries of 19th century
能量守恒和转化定律 The Law of Energy Conservation 生物进化论 The Evolution 细胞学说的建立 The Cell Theory
能量守恒和转化定律Sanctorius (1561-1636 ) Italian physiologist, professor of Padua
For a period of thirty years Sanctorius weighed himself, everything he ate and drank, as well as his urine and feces. He compared the weight of what he had eaten to that of his waste products, the latter being considerably smaller. He produced his theory of insensible perspiration as an attempt to account for this difference.
Weighing Chair
The Law of Energy ConservationGeman physician and physicist and one of the
founders of thermodynamics.
In 1841 he made the original statements of
the conservation of energy or the first versions
of the first law of thermodynamics: “Energy
can be neither created nor destroyed”
In 1842, Mayer described the vital chemical
process now referred to as oxidation as the
primary source of energy for any living
creature. His achievements were overlooked
and priority for the discovery of the
mechanical equivalent of heat was attributed
to James Joule in the following year.
He also proposed that plants convert light into
chemical energy.
Julius Robert von Mayer (1814-1878)
The Law of Energy Conservation
James Joule ( 1818-1889 ) English physicist and brewer
He studied the nature of heat and discovered its relationship to mechanical work (mechanical heat equivalent) , confirmed the law of conservation of energy, which led to the development of the first law of thermodynamics
Charles Robert Darwin English naturalist
(1809-1882)
EvolutionAll species of life have evolved over time from common ancestors, through the process he called natural selection.
In modern evolutionary theory, Darwin’s scientific discovery is the unifying theory of the life sciences, providing logical explanation for the diversity of life.
EvolutionCharles Robert Darwin
In his five-year (1831-1836)
voyage on HMS Beagle
established him as an
eminent geologist Puzzled by
the geographical distribution
of wildlife and fossils he
collected on the voyage,
Darwin investigated the
transmutation of species and
conceived his theory of
natural selection in 1838 。
加拉帕戈斯群岛 Galapagos Islands属厄瓜多尔,距南美大陆 1000 公里 由 23 岛屿和组成,称“生物进化活博物馆”
达尔文雀 D
arwin’s F
inches
加拉帕戈斯象龟Galapagos Tortoise共 12 亚种,平塔岛亚种“ Longsome George” 2012.6.24 死亡
Published in 1859
On the Origin of Species
established evolutionary descent with modification as the dominant scientific explanation of diversification in nature
“The struggle for existence, Survival of the fittest” ( 物竞天择,适者生存 )
“I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection.”
He examined human evolution and sexual selection in The Descent of Man, and Selection in Relation to Sex(1871), followed by The Expression of the Emotion in Man and Animals (1872)
Darwin 2009 commemorations
In the United Kingdom a special commemorative issue of the two pound coin shows a portrait of Darwin facing a chimpanzee surrounded by the inscription 1809 DARWIN 2009, with the edge inscription ON THE ORIGIN OF SPECIES 1859
In September 2008, the Church of England issued an article saying that the 200th anniversary of his birth was a fitting time to apologise to Darwin "for misunderstanding you and, by getting our first reaction wrong, encouraging others to misunderstand you still".[
Evolution : Evidence from embryology
Ernst Haeckel1834-1919
Recapitulation theory : an
individual organism's
biological development, or
ontogeny, parallels and
summarizes its species'
entire evolutionary
development, or phylogeny ontogeny recapitulates phylogeny fish, amphibians, reptiles, aves, mammalia, primate
The Cell Theory
Robert Hooke
1635-1702
The discovery of plant cell (cork) and
its naming
The Cell Theory
Matthias Schleiden1804-1881
German botanist and co-founder of the cell theory, along with Theodor Schwann and Rudolf Virchow. He wrote Contributions to Phytogenesis (1838), in which he stated that the different parts of the plant organism are composed of cells (inductive)
The Cell Theory In Microscopic Investigations on the
Accordance in the Structure and Growth of Plants and Animals (1839), in which he declared that "All living things are composed of cells and cell products." Thus cell theory was definitely constituted.
Theodor Schwann1810-1882
Schwann cell
Myelin sheath
The Cell Theory
Cells are the unit of structure, function and reproduction in living things.
Anything that is living is composed of cells The chemical reactions of an organism
occur in cells All cells come from preexisting cells
The development of pathology: Organ pathology
Giovanni Battista
Morgagni 1682-1771
Italian anatomist, professor of Padua University, and he is celebrated as the father of the modern anatomical pathology
The development of pathology1761 published De Sedibus et causis morborum per anatomem indagatis (On the seats and causes of diseases investigated by anatomy)
Based on 70 letters containing the records of some 646 dissections, including the symptoms during the course of the malady and the conditions found after death.
He made pathological anatomy a science, and diverted the course of medicine into new channels of exactness or precision
The development of pathology : Histopathology
Marie François Xavier Bichat 1771-1802
French anatomist and physiologist, is best remembered as the father of modern histology and pathology
He dissected 600 cadavers/year, was the first to introduce the notion of tissue as distinct entities.
He maintained that diseases attacked tissues rather than whole organs.
The development of pathology : cellular pathologyGerman doctor, anthropologist, public health activist, pathologist, prehistorian, biologist and politician, referred to as the “Father of Pathology,” and founded the field of social medicine. (duel challenged by Bismarck)
Omnis cellula e cellula ("every cell originates from another existing cell like it.") which he published in 1858
First one who discovered leukemia
Rudolf Ludwig Karl Virchow 1812-1902
Virchow's angle — The angle between the nasobasilar line and the nasosubnasal line.Virchow's disease — leontiasis ossium.Virchow's line — a line from the root of the nose to the lambda.Virchow's method of autopsy — A method of autopsy where each organ is taken out one by one. Virchow’s node— the presence of metastatic cancer in a lymph-node in the supraclavicular fossa (root of the neck left of the midline). Also known as Troisier’s sign. Virchow’s triad— factors contributing toward venous thrombus formation.
Medical Terms named after Virchow
Newton’s Apple
Essay writing
Medicine: its past, present and future You may choose any topics as long as follow the theme of
“history of medicine” Should be ORIGINAL Using your own words, not “copy” and
“paste” or “Control-C””Control-V” No less than 2000 words, including title, abstract, full text,
references, with your name and student number Word format, student number as file name Electronic version only Send to: [email protected], before November 16, 2014