skin cells

stem cells

liver cells

muscle cells

nerve

muscle

the brain

wire

muscle cells

stem cells

glial cells

prison cells

brains

spinal cord

a nerve

all of the above

they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

they do not have a nucleus

100 years

10 years

1 month

1 year

1 foot per second

1 meter per second

150 meters per second

100 miles per hour

hormonal

telegraph

proteins

electrical impulses

bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons