brains

all of the above

spinal cord

a nerve

proteins

electrical impulses

hormonal

telegraph

10 years

1 month

100 years

1 year

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

prison cells

muscle cells

stem cells

glial cells

liver cells

muscle cells

skin cells

stem cells

wire

muscle

nerve

the brain

they are very long compared to other cells in the body

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

1 meter per second

1 foot per second

150 meters per second

100 miles per hour