telegraph

proteins

hormonal

electrical impulses

Purkinje neurons

bipolar neurons

pyramidal neurons

multipolar neurons

10 years

1 year

100 years

1 month

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

they regenerate very quickly

glial cells

prison cells

muscle cells

stem cells

liver cells

stem cells

skin cells

muscle cells

muscle

wire

nerve

the brain

all of the above

a nerve

brains

spinal cord

1 foot per second

1 meter per second

100 miles per hour

150 meters per second