telegraph

proteins

hormonal

electrical impulses

1 month

100 years

10 years

1 year

glial cells

muscle cells

stem cells

prison cells

1 foot per second

150 meters per second

1 meter per second

100 miles per hour

a nerve

spinal cord

all of the above

brains

skin cells

stem cells

liver cells

muscle cells

multipolar neurons

Purkinje neurons

bipolar neurons

pyramidal neurons

they are very long compared to other cells in the body

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

wire

nerve

muscle

the brain