muscle cells

skin cells

liver cells

stem cells

they are very long compared to other cells in the body

they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

150 meters per second

100 miles per hour

1 foot per second

1 meter per second

stem cells

glial cells

prison cells

muscle cells

nerve

wire

muscle

the brain

hormonal

electrical impulses

proteins

telegraph

100 years

1 month

10 years

1 year

spinal cord

all of the above

a nerve

brains