the brain

nerve

wire

muscle

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

100 years

1 month

10 years

1 year

proteins

telegraph

electrical impulses

hormonal

a nerve

all of the above

brains

spinal cord

150 meters per second

1 meter per second

100 miles per hour

1 foot per second

pyramidal neurons

bipolar neurons

multipolar neurons

Purkinje neurons

glial cells

prison cells

muscle cells

stem cells

stem cells

muscle cells

liver cells

skin cells