external body cover
integumentary
protects and supports body organs
skeletal
allows manipulation of environment
muscular
fast acting control system
nervous
glands secrete hormones that regulate growth
endocrine
blood vessels / TRANSPORTS blood that carries oxygen/heart pumps blood
cardiovascular
picks up fluid leaked from blood vessels and returns it
lymphatic
mounts the attack against foreign substances
immune
keeps blood constantly supplied with oxygen and removes carbon dioxide
respiratory
BREAKS DOWN food into absorbable units that enter the blood for distribution
digestive
eliminates the nitrogenous wastes / regulates water
urinary
production of offspring
reproductive