electrical impulses

hormonal

telegraph

proteins

1 year

1 month

10 years

100 years

glial cells

prison cells

stem cells

muscle cells

they are very long compared to other cells in the body

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

spinal cord

all of the above

brains

a nerve

muscle

wire

nerve

the brain

pyramidal neurons

bipolar neurons

multipolar neurons

Purkinje neurons

100 miles per hour

150 meters per second

1 foot per second

1 meter per second

stem cells

liver cells

skin cells

muscle cells