skin cells

liver cells

muscle cells

stem cells

the brain

wire

nerve

muscle

hormonal

electrical impulses

telegraph

proteins

all of the above

a nerve

brains

spinal cord

stem cells

muscle cells

prison cells

glial cells

1 meter per second

1 foot per second

150 meters per second

100 miles per hour

100 years

1 year

10 years

1 month

bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons

they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body