100 years

1 month

1 year

10 years

the brain

muscle

nerve

wire

all of the above

brains

a nerve

spinal cord

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

they do not have a nucleus

liver cells

stem cells

muscle cells

skin cells

prison cells

glial cells

stem cells

muscle cells

proteins

electrical impulses

telegraph

hormonal

100 miles per hour

1 foot per second

150 meters per second

1 meter per second