telegraph

hormonal

proteins

electrical impulses

1 foot per second

100 miles per hour

1 meter per second

150 meters per second

multipolar neurons

pyramidal neurons

bipolar neurons

Purkinje neurons

liver cells

stem cells

skin cells

muscle cells

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

they regenerate very quickly

100 years

1 year

10 years

1 month

nerve

wire

the brain

muscle

brains

a nerve

all of the above

spinal cord

glial cells

muscle cells

stem cells

prison cells