This structure prevents food from entering your lungs when you swallow and contains your vocal cords

What is the larynx?
The pulmonary arteries and pulmonary veins connect the heart, and this

What are the lungs?
The fluid portion of the blood, more than half of your blood is made up of this
What is plasma?
Leaked plasma
What is lymph?
Your heart has this many chambers
What is four?
This is the main passageway to your lungs, also known as the windpipe

What is the trachea?
Blood vessels that carry blood away from the heart
What are arteries?
The pressure of circulating blood against the walls of the arteries
What is blood pressure?
This organ is most active in your childhood and greatly reduces in size during your early teen years.
What is the thymus?
This measures how quickly your heart is beating
What is your pulse?
This structure warms and moistens air as it enters the respiratory system

What is the nasal cavity?
These return blood to the heart
What are veins?
Most blood cells are formed here
What is bone marrow?
This structure recycles red blood cells and produces white blood cells
What is the spleen?
Arteries branch into small vessels called this
What are capillaries?

What are bronchi?
These prevent blood from flowing in the wrong direction

What are valves?
Red blood cells are missing this cellular structure
What is a nucleus?
These filter dead cells, viruses, bacteria, and other particles from lymph
What are lymph nodes
Your diaphragm and rib muscles do this when you exhale
What is relax?
This tells your body to increase your breathing rate
What is the amount of carbon dioxide in your blood?
The muscular chambers that pump blood to the lungs or body

What are ventricles?
This blood component provides defense against foreign substances
What are white blood cells?
The lymphatic system relies on these to squeeze lymph through the lymph vessels
What are muscles?
Carbon dioxide and oxygen pass between the alveoli and capillaries by this
What is diffusion?
When you do this, your diaphragm contracts and your chest cavity enlarges.
What is inhale?
The large vessel that branches into many smaller arteries to supply blood to the entire body

What is the aorta?
These clump together to form blood clots
What are platelets?
Lymph rejoins this at one of two large veins on either side of your body near your collarbone
What is the blood stream?
This is responsible for delivering oxygen and removing carbon dioxide from cells throughout the body
What is systemic circulation?