a nerve

brains

all of the above

spinal cord

muscle cells

stem cells

skin cells

liver cells

stem cells

glial cells

prison cells

muscle cells

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

1 foot per second

1 meter per second

150 meters per second

100 miles per hour

proteins

electrical impulses

hormonal

telegraph

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

nerve

wire

the brain

muscle

100 years

1 year

1 month

10 years