10 years

1 month

100 years

1 year

hormonal

telegraph

proteins

electrical impulses

150 meters per second

100 miles per hour

1 meter per second

1 foot per second

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

they do not have a nucleus

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons

muscle

the brain

nerve

wire

skin cells

liver cells

muscle cells

stem cells

all of the above

spinal cord

a nerve

brains

prison cells

stem cells

glial cells

muscle cells