1 month

1 year

10 years

100 years

electrical impulses

proteins

hormonal

telegraph

muscle

nerve

wire

the brain

a nerve

brains

all of the above

spinal cord

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

glial cells

muscle cells

stem cells

prison cells

Purkinje neurons

pyramidal neurons

multipolar neurons

bipolar neurons

1 foot per second

1 meter per second

100 miles per hour

150 meters per second

stem cells

muscle cells

skin cells

liver cells