wire

muscle

nerve

the brain

Purkinje neurons

multipolar neurons

pyramidal neurons

bipolar neurons

100 miles per hour

1 meter per second

1 foot per second

150 meters per second

10 years

1 month

100 years

1 year

they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

electrical impulses

telegraph

hormonal

proteins

prison cells

glial cells

stem cells

muscle cells

a nerve

all of the above

spinal cord

brains

skin cells

muscle cells

stem cells

liver cells