they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

liver cells

skin cells

stem cells

muscle cells

Purkinje neurons

multipolar neurons

bipolar neurons

pyramidal neurons

10 years

1 month

100 years

1 year

hormonal

electrical impulses

proteins

telegraph

100 miles per hour

150 meters per second

1 foot per second

1 meter per second

a nerve

brains

all of the above

spinal cord

glial cells

prison cells

muscle cells

stem cells

the brain

wire

muscle

nerve