skin cells

muscle cells

liver cells

stem cells

glial cells

muscle cells

prison cells

stem cells

proteins

electrical impulses

hormonal

telegraph

1 year

1 month

10 years

100 years

wire

the brain

nerve

muscle

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

a nerve

spinal cord

brains

all of the above

Purkinje neurons

bipolar neurons

pyramidal neurons

multipolar neurons

1 foot per second

1 meter per second

100 miles per hour

150 meters per second