1 month

100 years

10 years

1 year

they are very long compared to other cells in the body

they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

100 miles per hour

1 foot per second

1 meter per second

150 meters per second

brains

all of the above

a nerve

spinal cord

the brain

muscle

wire

nerve

proteins

electrical impulses

hormonal

telegraph

prison cells

muscle cells

stem cells

glial cells

multipolar neurons

bipolar neurons

pyramidal neurons

Purkinje neurons

liver cells

stem cells

skin cells

muscle cells