nerve

the brain

wire

muscle

1 foot per second

150 meters per second

100 miles per hour

1 meter per second

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they do not have a nucleus

multipolar neurons

pyramidal neurons

bipolar neurons

Purkinje neurons

prison cells

muscle cells

glial cells

stem cells

all of the above

spinal cord

a nerve

brains

skin cells

muscle cells

liver cells

stem cells

electrical impulses

proteins

telegraph

hormonal

10 years

100 years

1 month

1 year