a nerve

spinal cord

all of the above

brains

liver cells

muscle cells

skin cells

stem cells

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

proteins

hormonal

telegraph

electrical impulses

pyramidal neurons

multipolar neurons

Purkinje neurons

bipolar neurons

muscle cells

prison cells

stem cells

glial cells

1 meter per second

100 miles per hour

150 meters per second

1 foot per second

1 year

1 month

10 years

100 years

wire

nerve

muscle

the brain