pyramidal neurons

bipolar neurons

Purkinje neurons

multipolar neurons

telegraph

electrical impulses

hormonal

proteins

1 foot per second

100 miles per hour

150 meters per second

1 meter per second

liver cells

stem cells

skin cells

muscle cells

muscle cells

prison cells

stem cells

glial cells

a nerve

spinal cord

brains

all of the above

nerve

wire

muscle

the brain

they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

1 year

1 month

10 years

100 years