hormonal

proteins

electrical impulses

telegraph

Purkinje neurons

bipolar neurons

multipolar neurons

pyramidal neurons

1 foot per second

100 miles per hour

150 meters per second

1 meter per second

all of the above

brains

a nerve

spinal cord

10 years

1 year

1 month

100 years

muscle cells

liver cells

stem cells

skin cells

glial cells

muscle cells

prison cells

stem cells

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

they regenerate very quickly

muscle

nerve

the brain

wire