they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

they are very long compared to other cells in the body

the brain

wire

nerve

muscle

muscle cells

glial cells

prison cells

stem cells

1 month

1 year

10 years

100 years

liver cells

skin cells

muscle cells

stem cells

electrical impulses

telegraph

proteins

hormonal

all of the above

brains

a nerve

spinal cord

bipolar neurons

pyramidal neurons

Purkinje neurons

multipolar neurons

150 meters per second

1 foot per second

1 meter per second

100 miles per hour