hormonal

proteins

electrical impulses

telegraph

Purkinje neurons

bipolar neurons

pyramidal neurons

multipolar neurons

muscle cells

stem cells

prison cells

glial cells

muscle cells

stem cells

skin cells

liver cells

they do not have a nucleus

they regenerate very quickly

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

100 miles per hour

1 meter per second

1 foot per second

150 meters per second

brains

a nerve

spinal cord

all of the above

1 month

1 year

100 years

10 years

wire

the brain

nerve

muscle