telegraph

hormonal

proteins

electrical impulses

skin cells

muscle cells

liver cells

stem cells

Purkinje neurons

pyramidal neurons

bipolar neurons

multipolar neurons

1 meter per second

100 miles per hour

1 foot per second

150 meters per second

muscle cells

stem cells

glial cells

prison cells

they help carry oxygen to different parts of your body

they do not have a nucleus

they regenerate very quickly

they are very long compared to other cells in the body

10 years

1 month

1 year

100 years

the brain

nerve

wire

muscle

brains

a nerve

all of the above

spinal cord