they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

a nerve

brains

all of the above

spinal cord

muscle

wire

nerve

the brain

glial cells

stem cells

prison cells

muscle cells

liver cells

skin cells

stem cells

muscle cells

1 month

10 years

100 years

1 year

150 meters per second

1 meter per second

100 miles per hour

1 foot per second

Purkinje neurons

multipolar neurons

pyramidal neurons

bipolar neurons

proteins

hormonal

telegraph

electrical impulses