the brain

muscle

wire

nerve

multipolar neurons

Purkinje neurons

pyramidal neurons

bipolar neurons

muscle cells

glial cells

stem cells

prison cells

muscle cells

liver cells

skin cells

stem 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

brains

spinal cord

all of the above

a nerve

150 meters per second

1 foot per second

100 miles per hour

1 meter per second

electrical impulses

proteins

telegraph

hormonal

10 years

100 years

1 month

1 year