proteins

telegraph

hormonal

electrical impulses

Purkinje neurons

pyramidal neurons

multipolar neurons

bipolar neurons

stem cells

liver cells

skin cells

muscle cells

150 meters per second

1 foot per second

1 meter per second

100 miles per hour

stem cells

glial cells

prison cells

muscle cells

100 years

1 month

1 year

10 years

all of the above

brains

a nerve

spinal cord

the brain

muscle

nerve

wire

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body