they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

they do not have a nucleus

1 foot per second

100 miles per hour

1 meter per second

150 meters per second

telegraph

proteins

hormonal

electrical impulses

muscle cells

skin cells

liver cells

stem cells

multipolar neurons

Purkinje neurons

pyramidal neurons

bipolar neurons

muscle cells

stem cells

glial cells

prison cells

muscle

wire

the brain

nerve

10 years

1 month

1 year

100 years

all of the above

a nerve

spinal cord

brains