they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

muscle cells

stem cells

liver cells

skin cells

1 foot per second

1 meter per second

100 miles per hour

150 meters per second

glial cells

muscle cells

stem cells

prison cells

brains

spinal cord

a nerve

all of the above

Purkinje neurons

multipolar neurons

pyramidal neurons

bipolar neurons

nerve

wire

the brain

muscle

1 month

100 years

10 years

1 year

proteins

electrical impulses

telegraph

hormonal