1 month

100 years

10 years

1 year

muscle cells

stem cells

prison cells

glial cells

spinal cord

brains

all of the above

a nerve

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

skin cells

stem cells

muscle cells

liver cells

telegraph

hormonal

proteins

electrical impulses

bipolar neurons

pyramidal neurons

Purkinje neurons

multipolar neurons

muscle

wire

nerve

the brain

150 meters per second

1 foot per second

100 miles per hour

1 meter per second