150 meters per second

100 miles per hour

1 meter per second

1 foot per second

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

hormonal

electrical impulses

telegraph

proteins

liver cells

muscle cells

skin cells

stem cells

brains

all of the above

spinal cord

a nerve

muscle

the brain

wire

nerve

1 month

100 years

10 years

1 year

stem cells

muscle cells

prison cells

glial cells

pyramidal neurons

multipolar neurons

Purkinje neurons

bipolar neurons