telegraph

hormonal

proteins

electrical impulses

1 month

10 years

1 year

100 years

glial cells

stem cells

prison cells

muscle cells

liver cells

muscle cells

stem cells

skin cells

bipolar neurons

Purkinje neurons

multipolar neurons

pyramidal neurons

100 miles per hour

150 meters per second

1 foot per second

1 meter per second

they regenerate very quickly

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

the brain

muscle

nerve

wire

brains

all of the above

spinal cord

a nerve