telegraph

electrical impulses

proteins

hormonal

wire

muscle

the brain

nerve

spinal cord

all of the above

a nerve

brains

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they regenerate very quickly

they do not have a nucleus

150 meters per second

1 foot per second

100 miles per hour

1 meter per second

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

100 years

10 years

1 month

1 year

glial cells

muscle cells

stem cells

prison cells

liver cells

stem cells

muscle cells

skin cells