brains

all of the above

a nerve

spinal cord

stem cells

liver cells

skin cells

muscle cells

100 years

1 year

10 years

1 month

prison cells

muscle cells

stem cells

glial cells

100 miles per hour

1 foot per second

150 meters per second

1 meter per second

proteins

telegraph

electrical impulses

hormonal

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they do not have a nucleus

wire

the brain

nerve

muscle

multipolar neurons

pyramidal neurons

Purkinje neurons

bipolar neurons