telegraph

hormonal

electrical impulses

proteins

100 miles per hour

1 foot per second

1 meter per second

150 meters per second

1 year

1 month

10 years

100 years

multipolar neurons

Purkinje neurons

pyramidal neurons

bipolar neurons

spinal cord

all of the above

a nerve

brains

skin cells

stem cells

muscle cells

liver cells

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they regenerate very quickly

they do not have a nucleus

glial cells

stem cells

prison cells

muscle cells

the brain

nerve

muscle

wire