telegraph

electrical impulses

hormonal

proteins

pyramidal neurons

multipolar neurons

bipolar neurons

Purkinje neurons

skin cells

stem cells

liver cells

muscle cells

all of the above

brains

a nerve

spinal cord

wire

muscle

nerve

the brain

stem cells

glial cells

muscle cells

prison cells

100 years

10 years

1 year

1 month

1 foot per second

100 miles per hour

1 meter per second

150 meters per second

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