proteins

telegraph

hormonal

electrical impulses

they do not have a nucleus

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

Purkinje neurons

multipolar neurons

bipolar neurons

pyramidal neurons

muscle cells

liver cells

stem cells

skin cells

100 years

10 years

1 year

1 month

100 miles per hour

1 meter per second

1 foot per second

150 meters per second

a nerve

brains

spinal cord

all of the above

nerve

muscle

wire

the brain

stem cells

muscle cells

prison cells

glial cells