they help carry oxygen to different parts of your body

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

liver cells

muscle cells

skin cells

stem cells

pyramidal neurons

multipolar neurons

Purkinje neurons

bipolar neurons

glial cells

prison cells

muscle cells

stem cells

1 year

1 month

100 years

10 years

electrical impulses

hormonal

proteins

telegraph

nerve

muscle

wire

the brain

brains

all of the above

spinal cord

a nerve

1 meter per second

1 foot per second

100 miles per hour

150 meters per second