pyramidal neurons

Purkinje neurons

bipolar neurons

multipolar neurons

hormonal

proteins

electrical impulses

telegraph

a nerve

spinal cord

all of the above

brains

stem cells

muscle cells

glial cells

prison cells

1 year

1 month

10 years

100 years

liver cells

muscle cells

skin cells

stem cells

they are very long compared to other cells in the body

they regenerate very quickly

they help carry oxygen to different parts of your body

they do not have a nucleus

wire

nerve

the brain

muscle

150 meters per second

1 meter per second

1 foot per second

100 miles per hour