electrical impulses

hormonal

proteins

telegraph

wire

the brain

nerve

muscle

1 foot per second

100 miles per hour

150 meters per second

1 meter per second

a nerve

spinal cord

brains

all of the above

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

prison cells

muscle cells

glial cells

stem cells

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

stem cells

muscle cells

liver cells

skin cells

100 years

10 years

1 month

1 year