a nerve

all of the above

spinal cord

brains

10 years

1 month

1 year

100 years

liver cells

skin cells

stem cells

muscle cells

electrical impulses

proteins

telegraph

hormonal

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

the brain

wire

nerve

muscle

1 foot per second

150 meters per second

1 meter per second

100 miles per hour

glial cells

prison cells

muscle cells

stem cells

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons