This heart chamber receives deoxygenated blood from the superior and inferior vena cava.
What is the right atrium?
These blood cells carry oxygen using a protein called hemoglobin.
What are red blood cells?
These vessels carry blood away from the heart.
What are arteries?
These hairs trap dust and particles before they enter the lungs.
What are nose hairs?
The circulatory system brings this gas from the lungs to the body’s cells.
What is oxygen?
These thick-walled heart chambers pump blood out of the heart with great force.
What are the ventricles?
These fragments of cells circulate for about 10 days and help with blood clotting.
What are platelets?
These are the smallest blood vessels and allow gas exchange because of their thin walls.
What are capillaries?
These tiny “whips” move mucus toward the throat to be swallowed.
What are cilia?
Gas exchange occurs between alveoli and blood vessels through this process.
What is diffusion?
This major artery is about one inch wide and carries oxygenated blood out of the left ventricle.
What is the ascending aorta?
White blood cells increase in number when this happens to the body.
What is getting sick / fighting infection?
These two major veins return deoxygenated blood to the right atrium.
What are the superior and inferior vena cava?
These balloon-like sacs are where oxygen enters the bloodstream.
What are alveoli?
These blood vessels wrap around alveoli to pick up oxygen.
What are capillaries?
This heart layer means “heart muscle” and is the thickest layer of the wall.
What is the myocardium?
This is the process where oxygen seeps from capillaries into tissues and CO₂ seeps out.
What is diffusion?
These small vessels connect arteries to capillaries.
What are arterioles?
This muscle contracts and relaxes to help with breathing by changing the size of the chest cavity.
What is the diaphragm?
The respiratory system removes CO₂ from the body, and the circulatory system does this with the CO₂.
What is transporting it from cells to the lungs?
These ________ prevent blood from flowing backward when leaving the ventricles.
What are the (semilunar) valves?
This organ traps phagocytes that have eaten dead red blood cells and removes the iron to send back to the bones.
What is the liver?
Name the four major branches of the ascending aorta.
What are the descending aorta, brachiocephalic artery, carotid artery, and subclavian artery?
Your trachea is lined with these, and it is kept open by these structures.
What are cartilage rings?
Air goes into the ______ after leaving the trachea.
What is the Bronchi?