wire

the brain

nerve

muscle

100 miles per hour

1 meter per second

1 foot per second

150 meters per second

electrical impulses

proteins

hormonal

telegraph

a nerve

spinal cord

brains

all of the above

10 years

100 years

1 year

1 month

bipolar neurons

multipolar neurons

pyramidal neurons

Purkinje neurons

stem cells

prison cells

glial cells

muscle cells

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they do not have a nucleus

they regenerate very quickly

stem cells

muscle cells

skin cells

liver cells