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

a nerve

spinal cord

brains

all of the above

wire

muscle

the brain

nerve

prison cells

glial cells

muscle cells

stem cells

multipolar neurons

Purkinje neurons

pyramidal neurons

bipolar neurons

1 foot per second

1 meter per second

150 meters per second

100 miles per hour

stem cells

muscle cells

liver cells

skin cells

100 years

1 month

10 years

1 year

electrical impulses

proteins

telegraph

hormonal