telegraph

hormonal

proteins

electrical impulses

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they regenerate very quickly

they do not have a nucleus

the brain

nerve

muscle

wire

brains

a nerve

spinal cord

all of the above

skin cells

liver cells

stem cells

muscle cells

multipolar neurons

pyramidal neurons

Purkinje neurons

bipolar neurons

1 year

1 month

100 years

10 years

1 meter per second

1 foot per second

100 miles per hour

150 meters per second

glial cells

prison cells

muscle cells

stem cells