brains

spinal cord

a nerve

all of the above

150 meters per second

1 foot per second

100 miles per hour

1 meter per second

100 years

10 years

1 month

1 year

skin cells

muscle cells

liver cells

stem cells

nerve

muscle

the brain

wire

hormonal

proteins

electrical impulses

telegraph

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

muscle cells

stem cells

prison cells

glial cells

Purkinje neurons

bipolar neurons

pyramidal neurons

multipolar neurons