muscle cells

stem cells

prison cells

glial cells

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

hormonal

telegraph

electrical impulses

proteins

nerve

wire

the brain

muscle

liver cells

skin cells

stem cells

muscle cells

1 year

1 month

10 years

100 years

bipolar neurons

pyramidal neurons

Purkinje neurons

multipolar neurons

1 meter per second

1 foot per second

150 meters per second

100 miles per hour

a nerve

brains

spinal cord

all of the above