10 years

1 year

100 years

1 month

150 meters per second

1 meter per second

100 miles per hour

1 foot per second

a nerve

brains

spinal cord

all of the above

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

electrical impulses

proteins

hormonal

telegraph

muscle cells

glial cells

stem cells

prison cells

multipolar neurons

bipolar neurons

pyramidal neurons

Purkinje neurons

skin cells

stem cells

liver cells

muscle cells

muscle

the brain

wire

nerve