1 meter per second

100 miles per hour

150 meters per second

1 foot per second

hormonal

proteins

electrical impulses

telegraph

1 year

10 years

100 years

1 month

muscle cells

stem cells

skin cells

liver cells

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

wire

nerve

the brain

muscle

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

spinal cord

a nerve

brains

all of the above

stem cells

muscle cells

prison cells

glial cells