telegraph

proteins

electrical impulses

hormonal

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons

1 year

10 years

1 month

100 years

skin cells

liver cells

stem cells

muscle cells

stem cells

glial cells

prison cells

muscle cells

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

150 meters per second

1 foot per second

1 meter per second

100 miles per hour

a nerve

spinal cord

all of the above

brains

wire

the brain

nerve

muscle