skin cells

liver cells

muscle cells

stem cells

they regenerate very quickly

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

they do not have a nucleus

nerve

wire

muscle

the brain

bipolar neurons

pyramidal neurons

Purkinje neurons

multipolar neurons

a nerve

brains

spinal cord

all of the above

glial cells

prison cells

muscle cells

stem cells

electrical impulses

proteins

hormonal

telegraph

150 meters per second

100 miles per hour

1 meter per second

1 foot per second

1 month

100 years

10 years

1 year