the brain

muscle

wire

nerve

100 years

1 month

10 years

1 year

pyramidal neurons

bipolar neurons

multipolar neurons

Purkinje neurons

electrical impulses

telegraph

hormonal

proteins

prison cells

glial cells

muscle cells

stem cells

brains

all of the above

spinal cord

a nerve

150 meters per second

1 foot per second

1 meter per second

100 miles per hour

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

liver cells

stem cells

skin cells

muscle cells