This signals the body to react to changes in the environment, such as danger or the smell of food.
Brain
This holds urine before it is released from the body.
Bladder
This pump works every minute of life.
Heart
This system includes the stomach, esophagus and intestines
digestive
A desirable outcome given up to gain another desirable outcome.
Trade-off
This protects your brain and its connection to your spinal cord.
Skull
These sense the outside world and communicate with the rest of the body’s systems.
Nerves
This protects the lungs and supports breathing.
Rib Cage
This system includes the nose, trachea, and lungs
Respiratory System
A collection of tissues that performs a particular function or set of functions.
Organ
This moves food from the mouth into the stomach.
Esophagus
These begin the process of mechanical digestion and provide additional structure to the jaw.
Teeth
This absorbs water from food, stores wastes, and eventually eliminates wastes from the body.
Large Intestine
This system includes the brain and spinal cord
Nervous System
Information that supports or refutes a claim.
Evidence
Nutrients are absorbed from food and go into the blood here.
Small Intestine
This tube connects the throat and nose to the smaller tubes that lead into the lungs.
These remove wastes from the blood and transfer them into urine.
Kidneys
this body system includes the heart, veins and arteries
Circulatory System or Cardiovascular System
Chemicals that an organism takes in from its environment to use as a source of energy or as building blocks for growth.
Nutrients
This produces bile, which helps digest fats, break down toxins, and regulate cholesterol and sugar in the blood.
Liver
In these tiniest blood vessels, blood and organs exchange nutrients and waste.
These are the tiny sacs where the exchange of oxygen and carbon dioxide takes place.
Alveoli
This system includes the kidneys, bladder, lungs, and sweat glands
Excretory System
Tests run on human volunteers to show that a new medicine or device is both safe and effective.
Clinical Trial