glial cells

prison cells

stem cells

muscle cells

muscle cells

liver cells

skin cells

stem cells

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

spinal cord

a nerve

all of the above

brains

hormonal

telegraph

electrical impulses

proteins

150 meters per second

1 meter per second

1 foot per second

100 miles per hour

wire

nerve

the brain

muscle

multipolar neurons

bipolar neurons

pyramidal neurons

Purkinje neurons

1 month

10 years

100 years

1 year