spinal cord

brains

a nerve

all of the above

muscle

wire

nerve

the brain

they help carry oxygen to different parts of your body

they do not have a nucleus

they are very long compared to other cells in the body

they regenerate very quickly

telegraph

electrical impulses

proteins

hormonal

100 years

1 year

1 month

10 years

pyramidal neurons

Purkinje neurons

multipolar neurons

bipolar neurons

muscle cells

stem cells

glial cells

prison cells

skin cells

stem cells

liver cells

muscle cells

1 meter per second

1 foot per second

100 miles per hour

150 meters per second