150 meters per second

1 meter per second

100 miles per hour

1 foot per second

telegraph

proteins

electrical impulses

hormonal

they are very long compared to other cells in the body

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

a nerve

all of the above

brains

spinal cord

1 year

100 years

10 years

1 month

glial cells

stem cells

prison cells

muscle cells

liver cells

stem cells

muscle cells

skin cells

the brain

nerve

muscle

wire

bipolar neurons

multipolar neurons

pyramidal neurons

Purkinje neurons