The History CellThe History Cell

Marcos MontañoMarcos Montaño

The Discovery of The Discovery of CellsCells

The history of cell biology has been linked to The history of cell biology has been linked to technological development that could technological development that could support their study. Thus, the first approach support their study. Thus, the first approach to the morphology starts with popularizing to the morphology starts with popularizing the rudimentary lens microscopes made in the rudimentary lens microscopes made in the seventeenth century.the seventeenth century.

The First ObservationsThe First Observations

Antonie van Leeuwenhoek

Robert Hooke

The First ObservationsThe First Observations

M. Schleiden

R. Virchow

The First ObservationsThe First Observations

S. Ramon y Cajal

Antonie van Leeuwenhoek

He observed microorganisms in the water He observed microorganisms in the water andand

diiididdid the first “ Primitive Optical the first “ Primitive Optical Microscope “ .Microscope “ .

Robert HookeRobert Hooke

He observed very small cavities in sheets of He observed very small cavities in sheets of cork cork

cork and named them cells.cork and named them cells.

M. Schleiden and M. Schleiden and T. SchwannT. Schwann

They identified cells as structural They identified cells as structural units inunits in

animals and plants.animals and plants.

R. VirchowR. Virchow

He identified cells as the basic functional He identified cells as the basic functional andand

structural unit of living things.structural unit of living things.

S. Ramón y CajalS. Ramón y Cajal

He proved cellular theory with the case of He proved cellular theory with the case of nervous nervous

tissue.tissue.

Nerve Cells = NEURONSNerve Cells = NEURONS

Now a VIDEO Now a VIDEO ……

The Cell TheoryThe Cell Theory

All organisms are composed of cells

Cells are the basic unitbasic unit of structure and function in organisms.

All cell come from preexisting cells.