electrical impulses

hormonal

proteins

telegraph

pyramidal neurons

Purkinje neurons

bipolar neurons

multipolar neurons

the brain

wire

muscle

nerve

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

100 years

1 year

10 years

1 month

liver cells

muscle cells

skin cells

stem cells

1 foot per second

150 meters per second

100 miles per hour

1 meter per second

muscle cells

stem cells

prison cells

glial cells

spinal cord

brains

a nerve

all of the above