brains

spinal cord

a nerve

all of the above

nerve

muscle

wire

the brain

they do not have a nucleus

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

10 years

1 year

100 years

1 month

150 meters per second

1 meter per second

1 foot per second

100 miles per hour

glial cells

muscle cells

stem cells

prison cells

liver cells

skin cells

stem cells

muscle cells

multipolar neurons

pyramidal neurons

Purkinje neurons

bipolar neurons

electrical impulses

proteins

telegraph

hormonal