bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons

stem cells

prison cells

glial cells

muscle cells

proteins

telegraph

electrical impulses

hormonal

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

liver cells

stem cells

skin cells

muscle cells

a nerve

spinal cord

all of the above

brains

muscle

the brain

wire

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