brains

a nerve

all of the above

spinal cord

muscle

the brain

wire

nerve

skin cells

stem cells

liver cells

muscle cells

100 years

1 year

10 years

1 month

bipolar neurons

Purkinje neurons

multipolar neurons

pyramidal neurons

prison cells

glial cells

muscle cells

stem cells

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

they regenerate very quickly

1 foot per second

1 meter per second

100 miles per hour

150 meters per second

electrical impulses

hormonal

telegraph

proteins