brains

all of the above

spinal cord

a nerve

the brain

muscle

wire

nerve

100 miles per hour

150 meters per second

1 foot per second

1 meter per second

glial cells

prison cells

muscle cells

stem cells

100 years

1 month

10 years

1 year

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

they regenerate very quickly

Purkinje neurons

pyramidal neurons

multipolar neurons

bipolar neurons

muscle cells

stem cells

liver cells

skin cells

proteins

hormonal

telegraph

electrical impulses