teeth
penis
brain
bladder
ovaries
arteries
esophagus
kidneys
vas deferens
veins
capillaries
spinal cord
liver
large intestines
stomach
long bones
nerves
urethra
nose and mouth
vagina
rib cage
Fallopian tubes
testes
ureters
alveoli
uterus
trachea
spinal column
bronchial tubes
small intestine
pancreas
lungs
rectum
heart
digestive - This holds solid waste before it is expelled from the body.
digestive - This produces chemicals, such as digestive enzymes, that help digest food.
reproductive - Eggs develop in these.
reproductive - This is a tube-shaped passage from the uterus to the outside of the body.
nervous - This is a bundle of nerves that connects your brain to all the rest of your body.
excretory - urine is eliminated from the body through this tube.
skeletal - These protect the spinal cord and support the head and back.
circulatory - In these tiniest blood vessels blood and organs exchange nutrients and waste.
reproductive - Sperm are produced here.
digestive - This moves food from the mouth into the stomach.
respiratory - These are the tiny sacs where the exchange of oxygen and carbon dioxide takes place.
excretory - These remove wastes from the blood and transfer them into urine.
excretory - This holds urine before it is released from the body.
nervous - This signals the body to react to changes in the environment, such as danger or the smell of food.
respiratory - Air enters the body here.
skeletal - This protects the lungs and supports breathing.
digestive - This stretchy muscular sac holds food.
reproductive - A fertilized egg grows here.
skeletal - These provide support for the body and are where blood cells are produced.
digestive - These begin the process of mechanical digestion.
respiratory - Air passes through these just before it reaches the lungs.
digestive - This absorbs water from food, stores wastes, and eventually eliminates wastes from the body.
reproductive - This pump works every minute of life.
reproductive - In one of these tubes between the ovaries and uterus an egg is fertilized.
respiratory - These are where oxygen is exchanged between the blood and circulatory systems. These expand during inhalation and contract during exhalation.
digestive - This produces bile, which helps digest fats, breaks down toxins, and regulates cholesterol and sugar in the blood.
respiratory - This tube connects the throat and nose to the bronchial tubes.
nervous - These sense the outside world and communicate with the rest of the body's systems.
circulatory - These blood vessels carry blood away from the heart.
digestive - Nutrients are absorbed from food and go into the blood here.
reproductive - Sperm exit the body here.
reproductive - Semen passes through these tubes from the testes to the urethra.
excretory - These are tubes that urine passes though from the kidneys to the bladder.
circulatory - These blood vessels carry blood toward the heart.
