What causes the heart to contract? What do you think would happen to the blood flow to the body if there were a blockage to the anterior interventricular artery? What two effects does sympathetic stimulation have on the heart during exercise?
Blood Flow through Heart: Deoxygenated blood returns to the heart from the body via the vena cava. It enters the right atrium, then moves to the right ventricle, and is pumped out to the lungs via the pulmonary artery. Following gas exchange, oxygenated blood returns to the lef...
The build-up ofcholesterolandplaque(fatty deposits) in the arteries carrying blood to your heart can lead to blockages. When the blockage gets too large, the constriction of the artery may result in aheart attack. Your primary care doctor or cardiologist may detect blockages before a heart at...
Once oxygenated, the blood returns to the heart’s left ventricle and is pumped to the body. There is only one time in life when most people don’t have much need for the pulmonary artery or trunk. As fetuses, people don’t rely on breathing to create oxygen in the lungs. Instead ...
What is coronary artery disease (CAD)?CAD, or heart disease, occurs when arteries that supply blood to your heart become narrow or blocked. CAD is caused by plaque (cholesterol, fat, and other substances) that builds up in your arteries. Oxygen cannot get to your heart when your arteries ...
Blood pressure medicine lowers or helps control your blood pressure. Procedures can help open blocked arteries: Carotid endarterectomy (CEA) is used to remove plaque buildup from your arteries. Carotid angioplasty and stenting (CAS) is used to push the plaque against the artery wall with a ball...
Are muscular and pump oxygenated blood from the heart The largest artery is the aorta, which connects to the heart and takes in oxygenated blood from the left ventricle Capillaries The smallest blood vessel; so small blood cells can only move through them one at a time ...
Carry blood towards your heart Carry deoxygenated blood Has a thin layer of muscle tissue inside Contain valves to keep blood flowing Vein vs Artery.Veins are closer to the surface of your body, and arteries are deep inside your muscles. The walls of a vein are thinner than an artery. Vein...
Sometimes the term "heart disease" is incorrectly used as a synonym for coronary artery disease. Heart disease is synonymous with cardiac disease but not with cardiovascular disease, which is any disease of the heart or blood vessels. What Are the Early Warning Signs of Heart Disease? Signs and...
Heart failure may be a chronic condition (ongoing) or acute (occur suddenly). Certain conditions such as high blood pressure, diabetes and coronary artery disease can lead to congestive heart failure. There are a number of treatments for heart failure, and lifestyle changes can help improve ...