muscle

wire

nerve

the brain

telegraph

proteins

hormonal

electrical impulses

skin cells

muscle cells

liver cells

stem cells

150 meters per second

1 meter per second

1 foot per second

100 miles per hour

a nerve

spinal cord

brains

all of the above

pyramidal neurons

Purkinje neurons

bipolar neurons

multipolar neurons

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they regenerate very quickly

they do not have a nucleus

prison cells

stem cells

glial cells

muscle cells

1 month

100 years

1 year

10 years