hormonal

electrical impulses

telegraph

proteins

150 meters per second

1 foot per second

1 meter per second

100 miles per hour

muscle

the brain

wire

nerve

skin cells

muscle cells

liver cells

stem cells

muscle cells

stem cells

glial cells

prison cells

1 month

100 years

10 years

1 year

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

a nerve

all of the above

brains

spinal cord

multipolar neurons

pyramidal neurons

Purkinje neurons

bipolar neurons