liver cells

muscle cells

skin cells

stem cells

Purkinje neurons

multipolar neurons

pyramidal neurons

bipolar neurons

proteins

hormonal

telegraph

electrical impulses

1 foot per second

100 miles per hour

150 meters per second

1 meter per second

spinal cord

all of the above

a nerve

brains

they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

glial cells

prison cells

stem cells

muscle cells

the brain

muscle

nerve

wire

10 years

100 years

1 month

1 year