telegraph

hormonal

proteins

electrical impulses

1 foot per second

100 miles per hour

150 meters per second

1 meter per second

muscle cells

stem cells

prison cells

glial cells

bipolar neurons

multipolar neurons

Purkinje neurons

pyramidal neurons

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

all of the above

spinal cord

a nerve

brains

100 years

1 month

10 years

1 year

liver cells

stem cells

muscle cells

skin cells

muscle

the brain

nerve

wire