muscle cells

stem cells

skin cells

liver cells

150 meters per second

100 miles per hour

1 meter per second

1 foot per second

100 years

1 year

10 years

1 month

the brain

muscle

wire

nerve

a nerve

brains

all of the above

spinal cord

they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

electrical impulses

hormonal

telegraph

proteins

glial cells

prison cells

muscle cells

stem cells

multipolar neurons

bipolar neurons

Purkinje neurons

pyramidal neurons