the brain

wire

muscle

nerve

10 years

1 month

1 year

100 years

multipolar neurons

pyramidal neurons

Purkinje neurons

bipolar neurons

muscle cells

glial cells

stem cells

prison cells

they do not have a nucleus

they regenerate very quickly

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

brains

spinal cord

a nerve

all of the above

1 meter per second

150 meters per second

1 foot per second

100 miles per hour

telegraph

electrical impulses

hormonal

proteins

skin cells

muscle cells

stem cells

liver cells