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

they regenerate very quickly

stem cells

muscle cells

prison cells

glial cells

brains

a nerve

all of the above

spinal cord

wire

muscle

nerve

the brain

1 month

10 years

1 year

100 years

muscle cells

skin cells

stem cells

liver cells

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

electrical impulses

hormonal

telegraph

proteins

150 meters per second

1 foot per second

1 meter per second

100 miles per hour