100 miles per hour

150 meters per second

1 meter per second

1 foot per second

electrical impulses

telegraph

hormonal

proteins

skin cells

muscle cells

liver cells

stem cells

spinal cord

a nerve

brains

all of the above

nerve

the brain

wire

muscle

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

they regenerate very quickly

glial cells

stem cells

prison cells

muscle cells

Purkinje neurons

multipolar neurons

bipolar neurons

pyramidal neurons

10 years

1 year

100 years

1 month