the brain

wire

nerve

muscle

150 meters per second

1 meter per second

1 foot per second

100 miles per hour

telegraph

proteins

hormonal

electrical impulses

all of the above

brains

spinal cord

a nerve

muscle cells

stem cells

liver cells

skin cells

prison cells

glial cells

stem cells

muscle cells

multipolar neurons

Purkinje neurons

pyramidal neurons

bipolar neurons

1 month

10 years

1 year

100 years

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