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HUMAN CELLSHUMAN CELLS
Blood CellsBlood Cells
• Have a smooth shape to squeeze easily past other cells
• Life Span: 120 days
• Have a smooth shape to squeeze easily past other cells
• Life Span: 120 days
Liver Cells
• help to store proteins and detoxify drugs
• last up to 5 months
• help to store proteins and detoxify drugs
• last up to 5 months
Stomach Lining Cell
Stomach Lining Cell
• have a folded surface to give a larger area to take in food better
• Life Span: 2 days
• have a folded surface to give a larger area to take in food better
• Life Span: 2 days
Fat CellsFat Cells
• have a large reservoir in which they can store food
• once you have them you can’t get rid of them
• have a large reservoir in which they can store food
• once you have them you can’t get rid of them
Muscle CellMuscle Cell
• responsible for movement
• long and thin with pointed ends so they can slide over each other
• responsible for movement
• long and thin with pointed ends so they can slide over each other
Bone CellsBone Cells
• help build your skeleton
• Life Span: 25-30 years
• help build your skeleton
• Life Span: 25-30 years
Skin CellsSkin Cells
• are close together and cover a large area
• Life Span: 1-34 days
• are close together and cover a large area
• Life Span: 1-34 days
Nerve cellNerve cell
• 100 billion in human brain• do not replicate after maturity
• 100 billion in human brain• do not replicate after maturity
Lung CellsLung Cells
Sperm CellsSperm Cells
• Acrosome releases chemicals to help sperm enter the egg• 200 million in each ejaculate; live for 2 days inside the female
• Acrosome releases chemicals to help sperm enter the egg• 200 million in each ejaculate; live for 2 days inside the female
CELLSCELLSCELLSCELLS•Cells are the smallest of living creatures.
•Cells are made of atoms and molecules.
If an atom were the size of a pea,
A molecule would be the size of a marble,
The cell would be the size of a cruise ship,
And a human would be the size of North America.
•Cells are the smallest of living creatures.
•Cells are made of atoms and molecules.
If an atom were the size of a pea,
A molecule would be the size of a marble,
The cell would be the size of a cruise ship,
And a human would be the size of North America.
Cells - how big?