100 miles per hour

1 meter per second

150 meters per second

1 foot per second

spinal cord

all of the above

a nerve

brains

prison cells

stem cells

glial cells

muscle cells

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

wire

nerve

the brain

muscle

10 years

100 years

1 year

1 month

muscle cells

skin cells

liver cells

stem cells

electrical impulses

telegraph

hormonal

proteins

Purkinje neurons

multipolar neurons

pyramidal neurons

bipolar neurons