telegraph

proteins

hormonal

electrical impulses

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons

1 meter per second

100 miles per hour

150 meters per second

1 foot per second

wire

muscle

nerve

the brain

glial cells

muscle cells

prison cells

stem cells

a nerve

all of the above

spinal cord

brains

they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

skin cells

stem cells

liver cells

muscle cells

1 month

100 years

1 year

10 years