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

1 year

1 month

10 years

100 years

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons

stem cells

muscle cells

glial cells

prison cells

nerve

muscle

the brain

wire

muscle cells

skin cells

liver cells

stem cells

all of the above

a nerve

spinal cord

brains

150 meters per second

1 meter per second

100 miles per hour

1 foot per second

telegraph

hormonal

electrical impulses

proteins