100 years

1 month

10 years

1 year

bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons

stem cells

liver cells

muscle cells

skin cells

they are very long compared to other cells in the body

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

nerve

wire

muscle

the brain

spinal cord

all of the above

brains

a nerve

150 meters per second

1 meter per second

100 miles per hour

1 foot per second

hormonal

electrical impulses

telegraph

proteins

stem cells

prison cells

muscle cells

glial cells