prison cells

stem cells

glial cells

muscle cells

nerve

the brain

muscle

wire

they are very long compared to other cells in the body

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

150 meters per second

100 miles per hour

1 foot per second

1 meter per second

bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons

telegraph

hormonal

electrical impulses

proteins

all of the above

spinal cord

a nerve

brains

1 month

100 years

10 years

1 year

stem cells

liver cells

muscle cells

skin cells