all of the above

brains

a nerve

spinal cord

150 meters per second

1 foot per second

100 miles per hour

1 meter per second

the brain

wire

muscle

nerve

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

10 years

1 month

1 year

100 years

pyramidal neurons

bipolar neurons

Purkinje neurons

multipolar neurons

glial cells

prison cells

muscle cells

stem cells

skin cells

muscle cells

stem cells

liver cells

proteins

telegraph

electrical impulses

hormonal