Digestive System
This organ breaks down food using acid and enzymes.
stomach
These two organs help you breathe in oxygen and breathe out carbon dioxide.
lungs
These allow your body to move by pulling on your bones.
muscles
This organ pumps blood throughout the body.
heart
This organ is the control center of your body.
brain
This long tube carries food from your mouth to your stomach.
esophagus
Tiny air sacs in the lungs where oxygen enters the blood and carbon dioxide leaves it.
alveoli
This type of muscle is found only in the heart.
cardiac muscles
These blood vessels carry blood away from the heart.
arteries
This part of your body gives structure and protects organs like the brain and heart.
skeleton
This organ produces bile, which helps break down fats during digestion.
liver
This tube connects the throat to the lungs.
trachea
This type of muscle is involuntary and found in organs like the stomach and intestines.
smooth muscle
These tiny blood vessels connect arteries and veins and allow gas and nutrient exchange with body cells.
capillaries
This system carries messages between the brain and the body using electrical signals.
nervous system
Most nutrient absorption happens in this part of the digestive system.
small intestine
Your lungs take in this gas from the air to give your body energy.
oxygen
When you lift a heavy object, your biceps contract while your triceps relax. This is an example of this type of muscle movement.
voluntary movement
This component of blood carries oxygen to body cells and gives blood its red color.
red blood cells
This tube carries seminal fluid from the epididymis to the urethra.
Vas deferens
This organ absorbs water from food and forms solid waste before it leaves the body.
large intestine
This is the process of breathing out air from the lungs.
exhalation
These muscles are attached to bones and help you move your arms and legs.
skeletal muscles
This type of blood vessel carries blood toward the heart.
veins
This terms is used to describe the front side of the body.
Anterior / ventral