telegraph

proteins

hormonal

electrical impulses

stem cells

muscle cells

glial cells

prison cells

150 meters per second

1 meter per second

1 foot per second

100 miles per hour

Purkinje neurons

pyramidal neurons

multipolar neurons

bipolar neurons

they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

brains

spinal cord

all of the above

a nerve

the brain

muscle

nerve

wire

liver cells

muscle cells

stem cells

skin cells

10 years

1 month

100 years

1 year