hormonal

electrical impulses

telegraph

proteins

a nerve

brains

all of the above

spinal cord

muscle cells

prison cells

glial cells

stem cells

wire

nerve

the brain

muscle

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

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

skin cells

liver cells

muscle cells

stem cells

1 foot per second

1 meter per second

100 miles per hour

150 meters per second

1 month

100 years

10 years

1 year