Nerve cell (Neuron)
Structure: “head” and a long branch attached to it.
Function: transports data by electric pulses to other cells.
Size: head- 100 micrometer, branch- 100cm
Life span:
Quantity: Doesn’t change from birth only grows , each cell grows thousands of branches that connect with other cells.

Egg cell (ovum)
Structure: round and spherical.
Function: Reproduction
Size: 100 micrometer
Life span: 12 hr.
Quantity: 300-500

Skin cell
Structure: different shapes in different body parts, includes the material animals have in their horns.
Function: protection
Size: changes
Life span: renews itself

Plant cell
Structure: Has a geometric shape because its membrane surrounded with stiff shield.
The cell includes chloroplasts that contain chlorophyll that gives the plant its color.
Function: Enables the photosynthesis function and builds the leaf.
Size:-
Life span: Varies

Epithelium cell
Structure: Salivary
Function: lining bodily organs and surfaces
Size:
Life span: 3-5 days

Muscle cell
Skeletal cells
Structure: long and narrow, has 10,000 fibers in it.
Function: Carries the main muscles in our body.
Size: length 1-40 mm, width 10-40 micrometers
Life span: dies in case of injury, doesn’t reproduce itself , only grows incase of constant exercise.
Smooth cells
Structure: shorter, less fibers & Mitochondrion then the skeletal cells.
Function: is found within the walls of organs and structures doesn’t move much.
Size: length 15-200 micron width 3-8 micron

White blood cells, leukocytes
Structure: amorphous , changes it shape all the time
Function: Destroys germs and any foreign substance by swallowing it.
Travels everywhere, when it senses a germ of some kind it fibers get lengthened and push the white cell towards the germ.
Size: 3-4 micrometer
Life span: depends on the persons health

Red blood cell
Structure: bowl like shape
Function: Brings oxygen to all cells.
Size: diameter 6-8 micron, 2 micron thick
Life span: 105-120 days

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