skin cells

liver cells

stem cells

muscle cells

1 foot per second

1 meter per second

100 miles per hour

150 meters per second

the brain

wire

nerve

muscle

pyramidal neurons

Purkinje neurons

bipolar neurons

multipolar neurons

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

hormonal

electrical impulses

telegraph

proteins

1 year

1 month

10 years

100 years

glial cells

stem cells

muscle cells

prison cells

a nerve

brains

all of the above

spinal cord