the brain

wire

nerve

muscle

liver cells

muscle cells

stem cells

skin cells

Purkinje neurons

multipolar neurons

pyramidal neurons

bipolar neurons

proteins

telegraph

electrical impulses

hormonal

100 miles per hour

150 meters per second

1 foot per second

1 meter per second

stem cells

prison cells

glial cells

muscle cells

1 month

100 years

10 years

1 year

a nerve

all of the above

brains

spinal cord

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