electrical impulses

proteins

hormonal

telegraph

wire

the brain

muscle

nerve

liver cells

stem cells

skin cells

muscle cells

glial cells

muscle cells

stem cells

prison cells

a nerve

brains

all of the above

spinal cord

Purkinje neurons

multipolar neurons

pyramidal neurons

bipolar neurons

1 year

10 years

1 month

100 years

they do not have a nucleus

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

150 meters per second

100 miles per hour

1 meter per second

1 foot per second