Heart Anatomy
This muscular heart layer provides the force that pumps blood.
What is the myocardium?
This chamber pumps blood to the lungs.
What is the right ventricle?
These tiny vessels allow gases and nutrients to move between blood and tissues.
What are capillaries?
These cells carry oxygen.
What are red blood cells?
A low hemoglobin level may cause this symptom during activity.
What is fatigue?
This valve separates the left atrium from the left ventricle.
What is the mitral (bicuspid) valve?
These vessels carry oxygenated blood from the lungs to the left atrium.
What are the pulmonary veins?
These vessels carry blood away from the heart.
What are arteries?
These cell fragments help stop bleeding.
What are platelets?
This vitamin helps the body make proteins needed for blood clotting.
What is vitamin K?
This structure starts each heartbeat and sets the heart’s pace.
What is the sinoatrial (SA) node?
This chamber pumps oxygenated blood into the aorta.
What is the left ventricle?
Valves in veins prevent this from happening.
What is backflow?
These white blood cells are important phagocytes of pathogens.
What are neutrophils?
This kidney-produced hormone stimulates red blood cell production.
What is erythropoietin?
This double-layered sac protects and surrounds the heart.
What is the pericardium?
In this circulation, blood from the digestive organs travels to the liver before entering general circulation.
What is hepatic portal circulation?
These arteries branch from the ascending aorta to supply the heart muscle.
What are the coronary arteries?
These large bone marrow cells release fragments that become platelets.
What are megakaryocytes?
Fatigue and numbness in the feet may occur with a deficiency of this vitamin.
What is vitamin B12?
These specialized connections help cardiac muscle cells coordinate their contractions.
What are intercalated discs?
Circulation from the heart to the lungs and back to the heart.
What is pulmonary circulation?
These connections between blood vessels can provide another route for blood flow if one vessel is blocked.
What are anastomoses?
This term means the process of stopping bleeding.
What is hemostasis?
An Rh-negative parent receives this medication after giving birth to an Rh-positive newborn to help prevent Rh sensitization.
What is RhoGAM (Rh immune globulin)?