a nerve

spinal cord

all of the above

brains

1 month

1 year

10 years

100 years

1 foot per second

150 meters per second

100 miles per hour

1 meter per second

electrical impulses

telegraph

proteins

hormonal

stem cells

liver cells

skin cells

muscle cells

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they do not have a nucleus

they regenerate very quickly

multipolar neurons

bipolar neurons

pyramidal neurons

Purkinje neurons

muscle

nerve

wire

the brain

muscle cells

glial cells

prison cells

stem cells