1 year

1 month

100 years

10 years

a nerve

all of the above

brains

spinal cord

nerve

the brain

muscle

wire

multipolar neurons

pyramidal neurons

Purkinje neurons

bipolar neurons

they do not have a nucleus

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

muscle cells

stem cells

liver cells

skin cells

muscle cells

glial cells

prison cells

stem cells

1 meter per second

100 miles per hour

150 meters per second

1 foot per second

hormonal

telegraph

proteins

electrical impulses