EKG Ms P’s Class
|the right atrium receives blood via the lower body from the||inferior vena cava|
|the right atrium receives venous blood from the heart muscle via the||coronary sinus|
|the left atrium receives blood from the||pulmonary veins|
|the _____ is the largest vein that drains the heart||the coronary sinus|
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What does the great cardiac vein drain into?
It then curves around the left margin of the heart to reach the posterior surface. It merges with the oblique vein of the left atrium to form the coronary sinus, which drains into the right atrium. At the junction of the great cardiac vein and the coronary sinus, there is typically a valve present.
What drains into coronary sinus?
Function. The coronary sinus receives blood mainly from the small, middle, great and oblique cardiac veins. It also receives blood from the left marginal vein and the left posterior ventricular vein. It drains into the right atrium.
What is the largest vein below the thorax?
A&P Heart & Blood
|Largest vein below the thorax||Inferior Vena Cava|
|Vein that drains the liver||Hepatic|
|Three veins that form/empty into the hepatic portal vein||Gastric, Inferior Mesenteric, Superior Mesenteric|
|Longest superficial vein of the body; found in the leg||Greater Saphenous|
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What do coronary veins take blood away from?
Veins are blood vessels that carry blood toward the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. In contrast to veins, arteries carry blood away from the heart.
Which coronary artery is the Widowmaker?
left anterior descending artery
What major vessel drains all the cardiac veins?
The myocardium drains mainly by three groups of veins: (1) the CS and its tributaries, which return blood from almost the whole heart; (2) the anterior cardiac veins, which primarily drain the anterior regions of the RV and the right cardiac border, ending principally in the RA; and (3) the Thebesian venous network (
Is coronary sinus rhythm normal?
Coronary Sinus Rhythm. Rhythm that originates from the coronary sinus is characterized by retrograde P waves with a normal PR interval.
What artery does the coronary sinus travel with?
Middle Cardiac Vein: Travels with the posterior (right) interventricular coronary artery and empties into the Coronary Sinus posteriorly.
What are the major coronary veins?
The major venous vessels of the human heart are: coronary sinus, the anterior interventricular veins, left marginal veins, posterior veins of the left ventricle, and the posterior interventricular veins (see also the Coronary System Tutorial).
What vein is the longest?
The largest vein in the human body is the inferior vena cava, which carries deoxygenated blood from the lower half of the body back up to the heart.
What veins drain the leg and foot?
Two sets of veins drain the leg and foot: 1) Deep veins, which are usually venae comitantes accompanying the arteries of the leg and foot; and 2) Superficial veins, which drain into the great saphenous or the small saphenous vein.
What drains the thorax?
The supreme intercostal vein is a paired vein that drains the first intercostal space on its corresponding side. It usually drains into the brachiocephalic vein. The inferior vena cava returns blood from the abdomen and lower limbs to the right atrium of the heart.
Which type of blood vessel is the smallest?
Capillaries, the smallest blood vessels. Metarterioles, a vessel that links arterioles and capillaries. Venules, a blood vessel that allows deoxygenated blood to return from the capillary beds to the larger blood vessels called veins.
What are the 3 types of veins?
There are three main types of blood vessels: This vast system of blood vessels — arteries, veins, and capillaries — is over 60,000 miles long.
What are the three main types of blood vessels?
- Arteries. Arteries carry oxygen-rich blood away from the heart to all of the body’s tissues.
Where are the biggest veins in your body?
Superficial vein collecting blood from the inner leg and thigh and receiving blood from certain veins of the foot; it is the longest vein in the body.
- abdominal aorta.
- superior mesenteric artery.
- renal artery.
- renal vein.
- pulmonary artery.
- arch of aorta.
- inferior vena cava.
- pulmonary vein.
What are the 4 main arteries of the heart?
The Coronary Arteries are the blood vessels that supply blood to your heart. They branch off of the aorta at its base. The right coronary artery, the left main coronary, the left anterior descending, and the left circumflex artery, are the four major coronary arteries.
What percentage of blockage requires a stent?
By clinical guidelines, an artery should be clogged at least 70 percent before a stent should be placed, Resar said. “A 50 percent blockage doesn’t need to be stented,” he said.
Which artery is the most common to have blockage?
The LAD artery is the most commonly occluded of the coronary arteries. It provides the major blood supply to the interventricular septum, and thus bundle branches of the conducting system.
What are the 5 Major blood vessels?
There are five main types of blood vessels: arteries, arterioles, capillaries, venules and veins. Arteries carry blood away from the heart to other organs. They can vary in size. The largest arteries have special elastic fibres in their walls.
What veins feed the heart?
- These are blood vessels that take oxygen-poor blood back to the heart.
- Veins become larger and larger as they get closer to the heart.
- The superior vena cava is the large vein that brings blood from the head and arms to the heart, and the inferior vena cava brings blood from the abdomen and legs into the heart.
Are there veins in the heart?
The pulmonary veins are the veins that transfer oxygenated blood from the lungs to the heart. The largest pulmonary veins are the four main pulmonary veins, two from each lung that drain into the left atrium of the heart.
Which vessel does not drain blood into the right atrium?
Deoxygenated blood enters the right atrium through three major veins: the superior and inferior vena cava and the coronary sinus. The superior vena cava returns all of the blood to the heart from tissues superior to the heart in the head, neck, arms and upper thorax.
Which of the following layer of the artery helps the heart pump the blood?
The tunica intima is composed of a thin layer of endothelial cells and lines the entire circulatory system, from your heart and the large arteries all the way down to the very tiny capillary beds.
What are the two main branches of the left coronary artery?
The two main coronary arteries are the left and right coronary arteries. The left coronary artery (LCA), which divides into the left anterior descending artery and the circumflex branch, supplies blood to the heart ventricles and left atrium.
What are the 3 main heart arteries?
What are the two major coronary arteries?
- Right coronary artery supplies the right atrium and right ventricle with blood.
- Left main coronary artery branches into the circumflex artery and the left anterior descending artery.
Can heart grow new arteries?
In people with heart disease, it is not uncommon for new blood vessels to grow around blocked arteries in order to keep essential, oxygenated blood coursing through the body. But those emergency blood vessels don’t grow in everyone with coronary artery disease.
What happens if coronary artery is blocked?
Eventually, a narrowed coronary artery may develop new blood vessels that go around the blockage to get blood to the heart muscle. This causes a heart attack. If a blood vessel to the brain is blocked, usually from a blood clot, an ischemic stroke can happen.
Photo in the article by “Wikipedia”