150 meters per second

1 meter per second

100 miles per hour

1 foot per second

electrical impulses

proteins

hormonal

telegraph

liver cells

muscle cells

stem cells

skin cells

100 years

10 years

1 month

1 year

they do not have a nucleus

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they regenerate very quickly

nerve

muscle

wire

the brain

all of the above

a nerve

brains

spinal cord

muscle cells

glial cells

stem cells

prison cells

pyramidal neurons

bipolar neurons

multipolar neurons

Purkinje neurons