wire

nerve

muscle

the brain

150 meters per second

100 miles per hour

1 foot per second

1 meter per second

a nerve

spinal cord

all of the above

brains

muscle cells

prison cells

glial cells

stem cells

pyramidal neurons

Purkinje neurons

bipolar neurons

multipolar neurons

telegraph

electrical impulses

hormonal

proteins

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they regenerate very quickly

they do not have a nucleus

1 month

1 year

100 years

10 years

liver cells

skin cells

muscle cells

stem cells