spinal cord

all of the above

brains

a nerve

multipolar neurons

Purkinje neurons

pyramidal neurons

bipolar neurons

skin cells

stem cells

muscle cells

liver cells

the brain

wire

muscle

nerve

they help carry oxygen to different parts of your body

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

muscle cells

glial cells

prison cells

stem cells

100 years

10 years

1 year

1 month

100 miles per hour

1 foot per second

1 meter per second

150 meters per second

telegraph

hormonal

electrical impulses

proteins