muscle cells

stem cells

liver cells

skin cells

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they regenerate very quickly

they do not have a nucleus

1 month

100 years

10 years

1 year

muscle

nerve

wire

the brain

proteins

hormonal

electrical impulses

telegraph

brains

spinal cord

all of the above

a nerve

muscle cells

stem cells

prison cells

glial cells

150 meters per second

1 meter per second

100 miles per hour

1 foot per second

bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons