liver cells

muscle cells

skin cells

stem cells

electrical impulses

proteins

telegraph

hormonal

Purkinje neurons

multipolar neurons

pyramidal neurons

bipolar neurons

prison cells

stem cells

glial cells

muscle cells

150 meters per second

1 foot per second

1 meter per second

100 miles per hour

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

brains

spinal cord

a nerve

all of the above

100 years

1 month

10 years

1 year

muscle

wire

nerve

the brain