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CELLS
description
Transcript of CELLS
The smallest
unit capable
of life!
CELLS
• Multi-cellular: contain SPECIALIZED cells; some protists, animals, plants, fungi
Types of Living Things• Single-celled: simple; uni-
cellular; bacteria and some protists (amoeba & algae)• Prokaryotic cell =
BACTERIA ONLY; no nucleus; small, simple, self-sustaining
• Eukaryotic cell = all other life; nucleus and other organelles; complex
How Living Things Are Organized
living thing
NOTliving
SPECIALIZATION• Different types of cells form
during your development and perform different jobs in your body• Differ in shape, size, function,
and life span• a.k.a. Differentiation
1 nerve cells or neurons
carry "messages" through the
body
2 & 3red blood cells
white blood cells
carry oxygen from lungs to
other body cells
defend body from disease
4
muscle cellslengthen and
contract to allow for movement
5skin cells
shield the internal body from germs; control water
loss
6bone cellsform the
skeleton and support the
body
Major Systems of the Human
Body
CIRCULATORYSYSTEM
lymphaticsystem
cardiovascularsystem
Comparing Organ Systems•Trachea
•Teeth and saliva•Arteries•Muscles•Ligaments•Veins•Lungs•Cartilage
•Stomach•Capillaries•Heart•Intestines•Bronchi•Esophagus•Bones•Blood