they do not have a nucleus

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

1 year

1 month

10 years

100 years

a nerve

brains

spinal cord

all of the above

stem cells

prison cells

muscle cells

glial cells

pyramidal neurons

multipolar neurons

Purkinje neurons

bipolar neurons

skin cells

liver cells

muscle cells

stem cells

nerve

the brain

muscle

wire

1 meter per second

1 foot per second

100 miles per hour

150 meters per second

proteins

electrical impulses

hormonal

telegraph