muscle

wire

nerve

the brain

multipolar neurons

pyramidal neurons

Purkinje neurons

bipolar neurons

glial cells

prison cells

muscle cells

stem cells

100 years

1 year

1 month

10 years

they do not have a nucleus

they regenerate very quickly

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

electrical impulses

telegraph

hormonal

proteins

100 miles per hour

1 foot per second

150 meters per second

1 meter per second

a nerve

brains

all of the above

spinal cord

liver cells

muscle cells

stem cells

skin cells