nerve

the brain

muscle

wire

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they do not have a nucleus

they regenerate very quickly

stem cells

muscle cells

skin cells

liver cells

a nerve

spinal cord

brains

all of the above

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

proteins

hormonal

telegraph

electrical impulses

150 meters per second

1 foot per second

1 meter per second

100 miles per hour

stem cells

glial cells

prison cells

muscle cells

10 years

1 month

100 years

1 year