stem cells

muscle cells

prison cells

glial cells

pyramidal neurons

bipolar neurons

multipolar neurons

Purkinje neurons

wire

muscle

nerve

the brain

electrical impulses

proteins

hormonal

telegraph

100 miles per hour

150 meters per second

1 meter per second

1 foot per second

all of the above

brains

spinal cord

a nerve

muscle cells

stem cells

liver cells

skin cells

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 month

1 year

10 years

100 years