they do not have a nucleus

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they regenerate very quickly

prison cells

glial cells

stem cells

muscle cells

spinal cord

brains

a nerve

all of the above

stem cells

muscle cells

skin cells

liver cells

wire

the brain

nerve

muscle

100 years

1 month

1 year

10 years

hormonal

proteins

telegraph

electrical impulses

1 meter per second

100 miles per hour

1 foot per second

150 meters per second

pyramidal neurons

bipolar neurons

Purkinje neurons

multipolar neurons