150 meters per second

100 miles per hour

1 meter per second

1 foot per second

nerve

wire

the brain

muscle

Purkinje neurons

pyramidal neurons

multipolar neurons

bipolar neurons

muscle cells

skin cells

stem cells

liver cells

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

brains

spinal cord

a nerve

all of the above

muscle cells

glial cells

prison cells

stem cells

electrical impulses

hormonal

telegraph

proteins

10 years

100 years

1 year

1 month