proteins

hormonal

electrical impulses

telegraph

muscle

wire

nerve

the brain

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

they regenerate very quickly

150 meters per second

100 miles per hour

1 foot per second

1 meter per second

stem cells

glial cells

muscle cells

prison cells

multipolar neurons

bipolar neurons

pyramidal neurons

Purkinje neurons

1 year

10 years

1 month

100 years

all of the above

a nerve

brains

spinal cord

liver cells

skin cells

muscle cells

stem cells