liver cells

stem cells

muscle cells

skin cells

stem cells

glial cells

prison cells

muscle cells

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

they are very long compared to other cells in the body

spinal cord

brains

all of the above

a nerve

1 month

1 year

100 years

10 years

the brain

muscle

wire

nerve

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

1 meter per second

100 miles per hour

1 foot per second

150 meters per second

proteins

hormonal

electrical impulses

telegraph