telegraph

electrical impulses

proteins

hormonal

pyramidal neurons

multipolar neurons

bipolar neurons

Purkinje neurons

1 meter per second

150 meters per second

100 miles per hour

1 foot per second

stem cells

muscle cells

liver cells

skin cells

1 year

10 years

1 month

100 years

they help carry oxygen to different parts of your body

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

a nerve

brains

spinal cord

all of the above

glial cells

stem cells

muscle cells

prison cells

the brain

wire

muscle

nerve