muscle cells

prison cells

glial cells

stem cells

they do not have a nucleus

they are very long compared to other cells in the body

they regenerate very quickly

they help carry oxygen to different parts of your body

100 years

1 year

1 month

10 years

100 miles per hour

1 meter per second

1 foot per second

150 meters per second

Purkinje neurons

multipolar neurons

bipolar neurons

pyramidal neurons

all of the above

a nerve

brains

spinal cord

muscle

wire

the brain

nerve

hormonal

proteins

electrical impulses

telegraph

muscle cells

liver cells

stem cells

skin cells