prison cells

glial cells

stem cells

muscle cells

electrical impulses

proteins

hormonal

telegraph

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

multipolar neurons

pyramidal neurons

bipolar neurons

Purkinje neurons

100 years

1 month

1 year

10 years

liver cells

muscle cells

stem cells

skin cells

a nerve

brains

spinal cord

all of the above

muscle

wire

the brain

nerve

1 meter per second

150 meters per second

1 foot per second

100 miles per hour