hormonal

telegraph

electrical impulses

proteins

glial cells

stem cells

prison cells

muscle cells

multipolar neurons

bipolar neurons

pyramidal neurons

Purkinje neurons

skin cells

liver cells

stem cells

muscle cells

wire

the brain

nerve

muscle

1 year

1 month

100 years

10 years

they are very long compared to other cells in the body

they do not have a nucleus

they help carry oxygen to different parts of your body

they regenerate very quickly

all of the above

a nerve

brains

spinal cord

150 meters per second

1 meter per second

1 foot per second

100 miles per hour