they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

brains

a nerve

all of the above

spinal cord

wire

the brain

muscle

nerve

10 years

100 years

1 month

1 year

bipolar neurons

Purkinje neurons

multipolar neurons

pyramidal neurons

muscle cells

stem cells

prison cells

glial cells

telegraph

electrical impulses

hormonal

proteins

liver cells

skin cells

stem cells

muscle cells

1 foot per second

100 miles per hour

150 meters per second

1 meter per second