The Cell Theory

ANAXIMANDER

GreekSixth century B.C. Primary thoughts of evolution Creatures from the sea were

forced to come ashore, thereby evolving into land creatures

http://www.zikaden.de/bilder/anaximander.jpg

PLATO

Did not directly aid in the progress of biological thinking

His view was philosophical.Students went on to influence the

progression of biological studies in the field of classification

http://lgxserver.uniba.it/lei/sfi/ipertesti/platone/plato.jpg

THE ATOMISTSDemocritus (460 - 370 B.C.)

He followed Anaximander's view of evolution

Credited as being the father of atomic theory which connects directly to biology.

http://www.mlahanas.de/Greeks/images/Democritus1.jpg

ARISTOTLE(384 - 322 B.C.)Known for dissections. Drawn to animal classification in

order to discover aspects of connection between the soul and the human body.

Some aspects still stand today.

http://www.hao.ucar.edu/public/education/sp/images/aristotle.gif

THE DARK AGESDownfall in scientific thought.

WHY??

http://home.planet.nl/~dark.ages/cda/gallery/Dark_Ages.jpg

LEONARDO DA VINCI, RENE DESCARTES, AND WILLIAM

HARVEY

Three scientists from various periods.

Responsible for advancement of anatomical thought following the Dark Ages

Discoved the circulation of blood.

http://www.visi.com/~reuteler/vinci/self.jpg

THE MICROSCOPEAllowed scientists to gaze into a

new world the cellular world. Galileo is credited with the

invention of the microscope. First saw a living cell Antonie

von Leeuwenhoek.

ROBERT HOOKE

This English naturalist (1635 - 1703)

Coined the term "cell" after viewing slices of cork through a microscope.

The term came from the Latin word cella which means "storeroom" or "small container".

Rene Dutrochet

"the cell is the fundamental element in the structure of living bodies,”

Robert Brown

Made the first cell sighting

Matthias Schlieden's

Declared that animals are composed of cells.

Theodore Schwann

Schwann created the term "cell theory" and declared that plants consisted of cells.

http://microbiology.scu.edu.tw/lifescience/wong2/images/schwann.jpg

Rudolph Virchow

Experimented with diseases and found that all cells come from other existing cells.

http://vs.eun.org/eun.org2/eun/en/EUN_Biology/content.cfm?lang=en&ov=33442

CellsBasic Units of lifeBuilding blocks of all

organismsUnits of life

The Cell Theory1. All living things are composed of one or more cells.2. Cells are organisms' basic units of structure and function.3. Cells come only from existing cells.