telegraph

proteins

electrical impulses

hormonal

glial cells

prison cells

stem cells

muscle cells

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

Purkinje neurons

pyramidal neurons

multipolar neurons

bipolar neurons

stem cells

liver cells

muscle cells

skin cells

all of the above

brains

spinal cord

a nerve

1 month

1 year

100 years

10 years

150 meters per second

1 meter per second

100 miles per hour

1 foot per second

the brain

nerve

wire

muscle