1 month

100 years

1 year

10 years

hormonal

proteins

electrical impulses

telegraph

glial cells

stem cells

prison cells

muscle cells

a nerve

brains

spinal cord

all of the above

150 meters per second

1 meter per second

100 miles per hour

1 foot per second

they do not have a nucleus

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

wire

muscle

nerve

the brain

stem cells

muscle cells

liver cells

skin cells

bipolar neurons

Purkinje neurons

multipolar neurons

pyramidal neurons