telegraph

proteins

hormonal

electrical impulses

150 meters per second

100 miles per hour

1 meter per second

1 foot per second

bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons

stem cells

glial cells

prison cells

muscle cells

muscle

the brain

wire

nerve

1 year

10 years

1 month

100 years

brains

all of the above

a nerve

spinal cord

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

liver cells

muscle cells

skin cells

stem cells