What path does blood take in the coronary circulation?

The left coronary artery distributes blood to the left side of the heart, the left atrium and ventricle, and the interventricular septum. The circumflex artery arises from the left coronary artery and follows the coronary sulcus to the left. Eventually, it will fuse with the small branches of the right coronary artery.

1. What is the pathway of coronary circulation?
2. What is the blood pathway in order?
3. What do the coronary arteries supply?
4. What is the function of coronary circulation?
5. How do coronary arteries supply blood to the heart?
6. When do coronary arteries primarily receive blood flow?
7. How the heart works step by step?
8. What are the coronary arteries of the heart?
9. When does blood flow into the coronary arteries quizlet?
10. Why does coronary blood flow occur during diastole?
11. Where do the coronary veins drain?
12. Is coronary circulation as important as pulmonary and systemic circulation Why?
13. Where do the coronary arteries originate?

What is the pathway of coronary circulation?

In the human heart, two coronary arteries arise from the aorta just beyond the semilunar valves; during diastole, the increased aortic pressure above the valves forces blood into the coronary arteries and thence into the musculature of the heart.

What is the blood pathway in order?

Blood flows through the heart in the following order: 1) body –> 2) inferior/superior vena cava –> 3) right atrium –> 4) tricuspid valve –> 5) right ventricle –> 6) pulmonary arteries –> 7) lungs –> 8) pulmonary veins –> 9) left atrium –> 10) mitral or bicuspid valve –> 11) left ventricle –> 12) aortic valve –> 13) ...

What do the coronary arteries supply?

Coronary arteries supply blood to the heart muscle. Like all other tissues in the body, the heart muscle needs oxygen-rich blood to function. Also, oxygen-depleted blood must be carried away. The coronary arteries wrap around the outside of the heart.

What is the function of coronary circulation?

Coronary circulation is the circulation of blood in the blood vessels that supply the heart muscle (myocardium). Coronary arteries supply oxygenated blood to the heart muscle. Cardiac veins then drain away the blood after it has been deoxygenated.

How do coronary arteries supply blood to the heart?

Coronary Circulation

The aorta (the main blood supplier to the body) branches off into two main coronary blood vessels (also called arteries). These coronary arteries branch off into smaller arteries, which supply oxygen-rich blood to the entire heart muscle.

When do coronary arteries primarily receive blood flow?

Cardiovascular Pharmacology

Coronary blood flow occurs mostly during diastole because the coronary vasculature has one particular property: it is compressed by the contracting myocardium such that no flow occurs during systole.

How the heart works step by step?

The right ventricle pumps the oxygen-poor blood to the lungs through the pulmonary valve. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve. The left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body.

What are the coronary arteries of the heart?

The coronary arteries branch off the aorta and wrap around the heart, and the branches of the main arteries bring blood deep into the heart muscle. There are two main coronary arteries – the left main coronary artery and the right coronary artery.

When does blood flow into the coronary arteries quizlet?

The heart is a muscle that, like skeletal muscle, compresses its blood vessels when it contracts. The pressure inside the left ventricle is slightly higher than in the aorta during systole. 4. Consequently, flow occurs in the arteries supplying the subendocardial portion of the left ventricle only during diastole.

Why does coronary blood flow occur during diastole?

During systole the heart muscle contracts, constricting the coronary heart vessels. This is due to a strong contraction particularly from the left ventricle which compresses the intramuscular vessels. During Diastole the cardiac muscle relaxes, enabling blood to flow through the capillaries with no obstruction.

Where do the coronary veins drain?

Venous Supply to the Heart. The great cardiac vein, the middle cardiac vein, and the small cardiac vein all drain into the coronary sinus (which opens into the right atrium). The anterior cardiac veins drain directly into the right atrium.

Is coronary circulation as important as pulmonary and systemic circulation Why?

The pulmonary circulation is the portion that brings blood to the lungs and back. The systemic circulation is the portion that brings oxygenated blood to the rest of the body. The heart gets its own supply of blood through the coronary circulation. Coronary arteries deliver oxygenated blood from the aorta to the heart.

Where do the coronary arteries originate?

The coronary arteries arise from the aortic sinuses. The initial portion of the aortic root, which houses the leaflets of the aortic valve, is occupied by the aortic sinuses, also called the sinuses of Valsalva.