a nerve

all of the above

brains

spinal cord

stem cells

skin cells

liver cells

muscle cells

1 year

100 years

10 years

1 month

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

Purkinje neurons

pyramidal neurons

multipolar neurons

bipolar neurons

nerve

the brain

muscle

wire

telegraph

hormonal

electrical impulses

proteins

glial cells

prison cells

muscle cells

stem cells

150 meters per second

1 meter per second

100 miles per hour

1 foot per second