liver cells

skin cells

stem cells

muscle cells

stem cells

glial cells

prison cells

muscle cells

1 year

1 month

100 years

10 years

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

telegraph

electrical impulses

proteins

hormonal

100 miles per hour

1 meter per second

150 meters per second

1 foot per second

nerve

the brain

wire

muscle

bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons

brains

a nerve

all of the above

spinal cord