brains

all of the above

a nerve

spinal cord

pyramidal neurons

Purkinje neurons

bipolar neurons

multipolar neurons

nerve

muscle

the brain

wire

liver cells

stem cells

muscle cells

skin cells

100 miles per hour

1 foot per second

1 meter per second

150 meters per second

telegraph

proteins

hormonal

electrical impulses

they do not have a nucleus

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

stem cells

glial cells

muscle cells

prison cells

100 years

10 years

1 year

1 month