the brain

wire

nerve

muscle

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons

proteins

electrical impulses

hormonal

telegraph

1 foot per second

100 miles per hour

150 meters per second

1 meter per second

100 years

10 years

1 month

1 year

stem cells

glial cells

muscle cells

prison cells

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

they regenerate very quickly

skin cells

muscle cells

stem cells

liver cells

spinal cord

all of the above

a nerve

brains