brains

spinal cord

a nerve

all of the above

150 meters per second

1 meter per second

100 miles per hour

1 foot per second

they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

they are very long compared to other cells in the body

wire

nerve

the brain

muscle

telegraph

proteins

electrical impulses

hormonal

liver cells

muscle cells

stem cells

skin cells

muscle cells

glial cells

stem cells

prison cells

multipolar neurons

pyramidal neurons

bipolar neurons

Purkinje neurons

1 year

100 years

10 years

1 month