spinal cord

brains

a nerve

all of the above

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

they regenerate very quickly

1 month

10 years

1 year

100 years

electrical impulses

telegraph

proteins

hormonal

1 meter per second

150 meters per second

1 foot per second

100 miles per hour

nerve

muscle

the brain

wire

glial cells

stem cells

muscle cells

prison cells

Purkinje neurons

bipolar neurons

multipolar neurons

pyramidal neurons

muscle cells

liver cells

stem cells

skin cells