a nerve

spinal cord

all of the above

brains

the brain

nerve

muscle

wire

1 month

1 year

10 years

100 years

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

stem cells

skin cells

muscle cells

liver cells

Purkinje neurons

bipolar neurons

pyramidal neurons

multipolar neurons

150 meters per second

100 miles per hour

1 foot per second

1 meter per second

proteins

hormonal

telegraph

electrical impulses

muscle cells

prison cells

stem cells

glial cells