1 year

1 month

100 years

10 years

brains

all of the above

a nerve

spinal cord

muscle cells

skin cells

liver cells

stem cells

muscle

the brain

wire

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

hormonal

telegraph

proteins

electrical impulses

Purkinje neurons

multipolar neurons

pyramidal neurons

bipolar neurons

1 meter per second

1 foot per second

100 miles per hour

150 meters per second

prison cells

muscle cells

stem cells

glial cells