skin cells

liver cells

stem cells

muscle cells

a nerve

brains

spinal cord

all of the above

stem cells

muscle cells

glial cells

prison cells

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

150 meters per second

100 miles per hour

1 meter per second

1 foot per second

proteins

hormonal

telegraph

electrical impulses

1 month

100 years

1 year

10 years

Purkinje neurons

pyramidal neurons

multipolar neurons

bipolar neurons

muscle

the brain

wire

nerve