muscle cells

liver cells

stem cells

skin cells

they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

they are very long compared to other cells in the body

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons

telegraph

hormonal

proteins

electrical impulses

1 foot per second

1 meter per second

150 meters per second

100 miles per hour

spinal cord

a nerve

all of the above

brains

100 years

10 years

1 month

1 year

glial cells

prison cells

muscle cells

stem cells

muscle

nerve

wire

the brain