1 month

100 years

10 years

1 year

stem cells

glial cells

prison cells

muscle cells

muscle cells

liver cells

skin cells

stem cells

1 foot per second

100 miles per hour

150 meters per second

1 meter per second

proteins

telegraph

hormonal

electrical impulses

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

wire

the brain

nerve

muscle

pyramidal neurons

bipolar neurons

Purkinje neurons

multipolar neurons

a nerve

all of the above

spinal cord

brains