telegraph

proteins

hormonal

electrical impulses

brains

all of the above

a nerve

spinal cord

wire

the brain

nerve

muscle

skin cells

liver cells

muscle cells

stem cells

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

glial cells

stem cells

prison cells

muscle cells

they do not have a nucleus

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

150 meters per second

100 miles per hour

1 meter per second

1 foot per second

1 month

10 years

100 years

1 year