electrical impulses

proteins

telegraph

hormonal

multipolar neurons

Purkinje neurons

bipolar neurons

pyramidal neurons

prison cells

glial cells

stem cells

muscle cells

150 meters per second

1 meter per second

1 foot per second

100 miles per hour

muscle

the brain

nerve

wire

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

they regenerate very quickly

skin cells

liver cells

stem cells

muscle cells

all of the above

a nerve

spinal cord

brains

100 years

1 month

10 years

1 year