stem cells

glial cells

prison cells

muscle cells

1 month

100 years

10 years

1 year

proteins

hormonal

telegraph

electrical impulses

they do not have a nucleus

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

wire

muscle

the brain

nerve

liver cells

muscle cells

skin cells

stem cells

all of the above

spinal cord

a nerve

brains

bipolar neurons

pyramidal neurons

Purkinje neurons

multipolar neurons

150 meters per second

1 meter per second

1 foot per second

100 miles per hour