150 meters per second

100 miles per hour

1 foot per second

1 meter per second

nerve

the brain

muscle

wire

glial cells

stem cells

muscle cells

prison cells

muscle cells

skin cells

stem cells

liver cells

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

they do not have a nucleus

10 years

1 year

1 month

100 years

proteins

electrical impulses

hormonal

telegraph

a nerve

spinal cord

brains

all of the above

pyramidal neurons

multipolar neurons

Purkinje neurons

bipolar neurons