skin cells

stem cells

liver cells

muscle cells

hormonal

proteins

electrical impulses

telegraph

150 meters per second

100 miles per hour

1 foot per second

1 meter per second

100 years

1 year

10 years

1 month

multipolar neurons

pyramidal neurons

bipolar neurons

Purkinje neurons

the brain

nerve

wire

muscle

they regenerate very quickly

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

spinal cord

a nerve

all of the above

brains

stem cells

prison cells

muscle cells

glial cells