electrical impulses

proteins

telegraph

hormonal

prison cells

glial cells

muscle cells

stem cells

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

1 foot per second

150 meters per second

100 miles per hour

1 meter per second

spinal cord

brains

a nerve

all of the above

they regenerate very quickly

they are very long compared to other cells in the body

they do not have a nucleus

they help carry oxygen to different parts of your body

100 years

1 year

1 month

10 years

liver cells

stem cells

skin cells

muscle cells

the brain

muscle

wire

nerve