they regenerate very quickly

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they do not have a nucleus

all of the above

brains

spinal cord

a nerve

100 miles per hour

1 foot per second

1 meter per second

150 meters per second

stem cells

glial cells

prison cells

muscle cells

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

wire

the brain

nerve

muscle

10 years

1 month

1 year

100 years

proteins

telegraph

hormonal

electrical impulses

skin cells

stem cells

liver cells

muscle cells