the brain

muscle

wire

nerve

electrical impulses

proteins

hormonal

telegraph

1 meter per second

150 meters per second

100 miles per hour

1 foot per second

muscle cells

stem cells

prison cells

glial cells

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

stem cells

skin cells

muscle cells

liver cells

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

spinal cord

brains

a nerve

all of the above

1 year

10 years

1 month

100 years