skin cells

liver cells

stem cells

muscle cells

brains

all of the above

a nerve

spinal cord

the brain

wire

nerve

muscle

1 meter per second

1 foot per second

150 meters per second

100 miles per hour

they are very long compared to other cells in the body

they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

Purkinje neurons

bipolar neurons

multipolar neurons

pyramidal neurons

muscle cells

glial cells

stem cells

prison cells

proteins

electrical impulses

telegraph

hormonal

100 years

10 years

1 year

1 month