liver cells

stem cells

muscle cells

skin cells

proteins

electrical impulses

hormonal

telegraph

muscle cells

prison cells

stem cells

glial cells

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

all of the above

a nerve

spinal cord

brains

150 meters per second

100 miles per hour

1 meter per second

1 foot per second

100 years

1 month

10 years

1 year

the brain

wire

nerve

muscle

Purkinje neurons

bipolar neurons

multipolar neurons

pyramidal neurons