1 foot per second

100 miles per hour

1 meter per second

150 meters per second

they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

spinal cord

brains

all of the above

a nerve

muscle cells

stem cells

skin cells

liver cells

10 years

100 years

1 year

1 month

the brain

wire

nerve

muscle

pyramidal neurons

bipolar neurons

multipolar neurons

Purkinje neurons

stem cells

muscle cells

glial cells

prison cells

electrical impulses

proteins

telegraph

hormonal