proteins

electrical impulses

hormonal

telegraph

liver cells

muscle cells

stem cells

skin cells

150 meters per second

100 miles per hour

1 meter per second

1 foot per second

all of the above

a nerve

brains

spinal cord

prison cells

muscle cells

stem cells

glial cells

1 month

1 year

100 years

10 years

they are very long compared to other cells in the body

they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

muscle

the brain

nerve

wire

Purkinje neurons

multipolar neurons

pyramidal neurons

bipolar neurons