1 month

100 years

10 years

1 year

brains

all of the above

spinal cord

a nerve

muscle cells

stem cells

liver cells

skin cells

the brain

nerve

muscle

wire

glial cells

prison cells

muscle cells

stem cells

they help carry oxygen to different parts of your body

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

telegraph

electrical impulses

proteins

hormonal

bipolar neurons

Purkinje neurons

pyramidal neurons

multipolar neurons

1 foot per second

100 miles per hour

150 meters per second

1 meter per second