stem cells

glial cells

muscle cells

prison cells

skin cells

liver cells

muscle cells

stem cells

10 years

1 year

100 years

1 month

they regenerate very quickly

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

1 meter per second

1 foot per second

150 meters per second

100 miles per hour

telegraph

proteins

hormonal

electrical impulses

muscle

the brain

nerve

wire

Purkinje neurons

multipolar neurons

bipolar neurons

pyramidal neurons

all of the above

spinal cord

a nerve

brains