a nerve

spinal cord

all of the above

brains

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

glial cells

prison cells

stem cells

muscle cells

they regenerate very quickly

they are very long compared to other cells in the body

they do not have a nucleus

they help carry oxygen to different parts of your body

nerve

wire

the brain

muscle

100 miles per hour

1 foot per second

1 meter per second

150 meters per second

1 year

1 month

10 years

100 years

hormonal

proteins

electrical impulses

telegraph

liver cells

stem cells

skin cells

muscle cells