muscle

wire

nerve

the brain

electrical impulses

proteins

hormonal

telegraph

muscle cells

stem cells

skin cells

liver cells

bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons

1 foot per second

1 meter per second

150 meters per second

100 miles per hour

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

they regenerate very quickly

all of the above

spinal cord

a nerve

brains

10 years

1 month

1 year

100 years

prison cells

glial cells

muscle cells

stem cells