100 miles per hour

150 meters per second

1 foot per second

1 meter per second

wire

nerve

the brain

muscle

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

all of the above

a nerve

brains

spinal cord

stem cells

liver cells

skin cells

muscle cells

Purkinje neurons

multipolar neurons

bipolar neurons

pyramidal neurons

stem cells

prison cells

muscle cells

glial cells

10 years

1 year

100 years

1 month

telegraph

proteins

electrical impulses

hormonal