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

they do not have a nucleus

150 meters per second

100 miles per hour

1 foot per second

1 meter per second

telegraph

electrical impulses

hormonal

proteins

nerve

muscle

the brain

wire

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

all of the above

spinal cord

a nerve

brains

100 years

1 year

1 month

10 years

muscle cells

stem cells

prison cells

glial cells

liver cells

muscle cells

stem cells

skin cells