150 meters per second

100 miles per hour

1 meter per second

1 foot per second

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

they do not have a nucleus

skin cells

stem cells

liver cells

muscle cells

telegraph

electrical impulses

hormonal

proteins

all of the above

brains

a nerve

spinal cord

glial cells

stem cells

prison cells

muscle cells

1 month

10 years

1 year

100 years

multipolar neurons

Purkinje neurons

bipolar neurons

pyramidal neurons

the brain

nerve

muscle

wire