wire

nerve

the brain

muscle

glial cells

prison cells

stem cells

muscle cells

bipolar neurons

multipolar neurons

pyramidal neurons

Purkinje neurons

spinal cord

all of the above

brains

a nerve

they help carry oxygen to different parts of your body

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

stem cells

liver cells

muscle cells

skin cells

1 month

10 years

1 year

100 years

telegraph

hormonal

proteins

electrical impulses

150 meters per second

1 foot per second

1 meter per second

100 miles per hour