150 meters per second

1 foot per second

100 miles per hour

1 meter per second

1 month

10 years

1 year

100 years

skin cells

stem cells

muscle cells

liver cells

telegraph

hormonal

electrical impulses

proteins

spinal cord

all of the above

brains

a nerve

multipolar neurons

bipolar neurons

pyramidal neurons

Purkinje neurons

prison cells

muscle cells

stem cells

glial cells

nerve

wire

muscle

the brain

they help carry oxygen to different parts of your body

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body