electrical impulses

proteins

telegraph

hormonal

100 miles per hour

1 meter per second

150 meters per second

1 foot per second

spinal cord

a nerve

brains

all of the above

nerve

the brain

muscle

wire

1 month

100 years

10 years

1 year

stem cells

prison cells

muscle cells

glial cells

they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

liver cells

stem cells

muscle cells

skin cells

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons