proteins

telegraph

electrical impulses

hormonal

Purkinje neurons

bipolar neurons

multipolar neurons

pyramidal neurons

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

brains

all of the above

a nerve

spinal cord

1 month

100 years

1 year

10 years

glial cells

prison cells

muscle cells

stem cells

the brain

muscle

nerve

wire

skin cells

stem cells

muscle cells

liver cells

1 foot per second

1 meter per second

100 miles per hour

150 meters per second