electrical impulses

telegraph

proteins

hormonal

10 years

1 year

1 month

100 years

bipolar neurons

multipolar neurons

pyramidal neurons

Purkinje neurons

1 meter per second

150 meters per second

100 miles per hour

1 foot per second

glial cells

prison cells

muscle cells

stem cells

they are very long compared to other cells in the body

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

muscle

wire

nerve

the brain

stem cells

muscle cells

liver cells

skin cells

all of the above

a nerve

brains

spinal cord