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

stem cells

glial cells

prison cells

muscle cells

1 month

1 year

100 years

10 years

brains

spinal cord

all of the above

a nerve

wire

nerve

the brain

muscle

muscle cells

skin cells

liver cells

stem cells

150 meters per second

1 meter per second

100 miles per hour

1 foot per second

electrical impulses

proteins

telegraph

hormonal

multipolar neurons

bipolar neurons

pyramidal neurons

Purkinje neurons