they are very long compared to other cells in the body

they regenerate very quickly

they do not have a nucleus

they help carry oxygen to different parts of your body

1 year

10 years

1 month

100 years

nerve

wire

muscle

the brain

100 miles per hour

1 foot per second

150 meters per second

1 meter per second

a nerve

all of the above

brains

spinal cord

hormonal

telegraph

proteins

electrical impulses

muscle cells

liver cells

skin cells

stem cells

bipolar neurons

pyramidal neurons

multipolar neurons

Purkinje neurons

glial cells

prison cells

muscle cells

stem cells