muscle

wire

nerve

the brain

they are very long compared to other cells in the body

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

150 meters per second

1 foot per second

1 meter per second

100 miles per hour

spinal cord

brains

all of the above

a nerve

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons

proteins

electrical impulses

hormonal

telegraph

liver cells

muscle cells

stem cells

skin cells

muscle cells

stem cells

glial cells

prison cells

10 years

1 year

100 years

1 month