they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

10 years

1 year

100 years

1 month

multipolar neurons

Purkinje neurons

bipolar neurons

pyramidal neurons

stem cells

muscle cells

skin cells

liver cells

brains

spinal cord

a nerve

all of the above

muscle cells

glial cells

prison cells

stem cells

wire

muscle

the brain

nerve

electrical impulses

hormonal

proteins

telegraph

150 meters per second

1 meter per second

100 miles per hour

1 foot per second