a nerve

spinal cord

brains

all of the above

electrical impulses

telegraph

hormonal

proteins

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

liver cells

muscle cells

skin cells

stem cells

stem cells

prison cells

glial cells

muscle cells

1 foot per second

150 meters per second

100 miles per hour

1 meter per second

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

10 years

100 years

1 month

1 year

nerve

muscle

the brain

wire