stem cells

prison cells

glial cells

muscle cells

electrical impulses

proteins

hormonal

telegraph

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they do not have a nucleus

150 meters per second

100 miles per hour

1 meter per second

1 foot per second

Purkinje neurons

multipolar neurons

pyramidal neurons

bipolar neurons

the brain

nerve

wire

muscle

all of the above

spinal cord

a nerve

brains

1 month

10 years

100 years

1 year

liver cells

muscle cells

skin cells

stem cells