a nerve

all of the above

spinal cord

brains

150 meters per second

1 foot per second

1 meter per second

100 miles per hour

telegraph

hormonal

proteins

electrical impulses

muscle cells

skin cells

stem cells

liver cells

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

1 month

100 years

10 years

1 year

wire

muscle

nerve

the brain

prison cells

stem cells

glial cells

muscle cells

Purkinje neurons

bipolar neurons

multipolar neurons

pyramidal neurons