1 year

100 years

1 month

10 years

pyramidal neurons

multipolar neurons

bipolar neurons

Purkinje neurons

telegraph

electrical impulses

proteins

hormonal

all of the above

brains

a nerve

spinal cord

muscle

wire

the brain

nerve

stem cells

liver cells

muscle cells

skin cells

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

muscle cells

prison cells

glial cells

stem cells

1 foot per second

100 miles per hour

150 meters per second

1 meter per second