100 years

1 year

10 years

1 month

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

1 foot per second

150 meters per second

100 miles per hour

1 meter per second

pyramidal neurons

bipolar neurons

multipolar neurons

Purkinje neurons

stem cells

prison cells

muscle cells

glial cells

all of the above

brains

spinal cord

a nerve

telegraph

proteins

hormonal

electrical impulses

skin cells

liver cells

muscle cells

stem cells

nerve

wire

muscle

the brain