telegraph

hormonal

electrical impulses

proteins

multipolar neurons

bipolar neurons

Purkinje neurons

pyramidal neurons

muscle

nerve

the brain

wire

stem cells

muscle cells

glial cells

prison cells

skin cells

stem cells

muscle cells

liver cells

150 meters per second

100 miles per hour

1 foot per second

1 meter per second

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they do not have a nucleus

1 month

1 year

10 years

100 years

brains

a nerve

all of the above

spinal cord