100 years

1 year

1 month

10 years

all of the above

brains

a nerve

spinal cord

muscle cells

stem cells

glial cells

prison cells

telegraph

proteins

hormonal

electrical impulses

the brain

nerve

wire

muscle

muscle cells

skin cells

liver cells

stem cells

1 meter per second

1 foot per second

150 meters per second

100 miles per hour

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

multipolar neurons

Purkinje neurons

pyramidal neurons

bipolar neurons