Digestive System
This is where digestion begins and food is chewed and mixed with saliva.
What is the mouth?
We breathe in this gas, which cells need for respiration.
What is oxygen?
This organ pumps blood around the body.
What is the heart?
The hard structures that form the body's supportive framework.
What are bones?
This body system includes the brain, spinal cord and nerves.
What is the nervous system?
This tube carries food from the mouth to the stomach.
What is the oesophagus?
These two organs fill with air when we inhale.
What are the lungs?
These blood vessels carry blood away from the heart.
What are arteries?
These connect muscles to bones.
What are tendons?
The body's largest organ.
What is the skin?
This organ produces bile, which helps break down fats.
What is the liver?
The muscle beneath the lungs that helps us breathe.
What is the diaphragm?
This component of blood helps fight infections.
What are white blood cells?
This tissue connects bone to bone at a joint.
What are ligaments?
This system works with the circulatory system to remove waste products from the body.
What is the excretory (or urinary) system?
Most nutrient absorption happens in this part of the digestive system.
What is the small intestine?
Tiny air sacs where oxygen enters the blood and carbon dioxide leaves it.
What are alveoli?
These tiny blood vessels are where exchange of oxygen, nutrients and wastes occurs.
What are capillaries?
A place where two or more bones meet.
What is a joint?
The body process that helps maintain a stable internal environment.
What is homeostasis?
Tiny finger-like structures in the small intestine increase the surface area for absorption.
What are villi?
The process by which cells release energy from glucose using oxygen.
What is cellular respiration?
This side of the heart pumps blood to the lungs to collect oxygen.
Where does the right side of the heart pump blood to?
Muscles work in pairs because they can only do this action.
What is pull (or contract)?
This level of organisation comes after tissues and before organ systems.
What is an organ?