skin cells

stem cells

liver cells

muscle cells

1 foot per second

150 meters per second

1 meter per second

100 miles per hour

the brain

nerve

wire

muscle

a nerve

all of the above

spinal cord

brains

electrical impulses

telegraph

proteins

hormonal

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

they regenerate very quickly

glial cells

prison cells

muscle cells

stem cells

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

1 month

1 year

10 years

100 years