stem cells

muscle cells

liver cells

skin cells

spinal cord

brains

all of the above

a nerve

they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

they are very long compared to other cells in the body

the brain

wire

muscle

nerve

10 years

1 year

1 month

100 years

hormonal

telegraph

electrical impulses

proteins

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

muscle cells

glial cells

prison cells

stem cells

1 meter per second

100 miles per hour

1 foot per second

150 meters per second