hormonal

electrical impulses

telegraph

proteins

1 year

10 years

1 month

100 years

pyramidal neurons

multipolar neurons

Purkinje neurons

bipolar neurons

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

wire

muscle

nerve

the brain

muscle cells

liver cells

stem cells

skin cells

all of the above

a nerve

brains

spinal cord

1 foot per second

1 meter per second

150 meters per second

100 miles per hour

muscle cells

stem cells

prison cells

glial cells