muscle

wire

the brain

nerve

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

1 year

1 month

100 years

10 years

liver cells

muscle cells

skin cells

stem cells

1 foot per second

100 miles per hour

150 meters per second

1 meter per second

all of the above

brains

a nerve

spinal cord

hormonal

proteins

telegraph

electrical impulses

multipolar neurons

pyramidal neurons

bipolar neurons

Purkinje neurons

stem cells

muscle cells

glial cells

prison cells