wire

the brain

muscle

nerve

brains

all of the above

spinal cord

a nerve

muscle cells

stem cells

prison cells

glial 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

multipolar neurons

pyramidal neurons

bipolar neurons

Purkinje neurons

1 year

10 years

100 years

1 month

proteins

telegraph

electrical impulses

hormonal

muscle cells

skin cells

stem cells

liver cells

1 meter per second

150 meters per second

1 foot per second

100 miles per hour