Preview

Coronary circulation

Powerful Essays
Open Document
Open Document
2515 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Coronary circulation
Tema 16. Coronary Circulation

Comisión Papanicolaou

Unit 16. Coronary Circulation

1. Morfofunctional organisation 1.1 Anatomical organisation 1.2 Dominance 1.3 Functional organisation 2. Regulation 2.1 Autoregulation 2.2 Extrinsic regulation 1. Morfofunctional origination

Coronary circulation is the circulation of blood in the blood vessels of the myocardium. The vessels that deliver oxygen-­‐rich blood to the myocardium are known as coronary arteries. The vessels that remove the deoxygenated blood from the heart muscle are known as cardiac veins. Anatomical organization The coronary circulation starts at the beginning of the aorta; here we find two arteries in the right and the left side! right and left coronary arteries. Both arteries have several superficial branches that lie on the surface of the heart (these are the ones with the bigger diameter), smaller arteries then penetrate from the surface into the cardiac muscle mass! subendocardial arteries.

You May Also Find These Documents Helpful

  • Good Essays

    acetanilide lab

    • 425 Words
    • 2 Pages

    A: Seminal vesicles Q: Which of the ff are branches off the right coronary artery? A: Posterior interventricular, atrial branches and right marginal branch Q: Which of the ff are branches of the left coronary artery? A: Circumflex branch and anterior interventricular branch Q: Where is the moderator band found?…

    • 425 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Coronary artery disease is the condition of the narrowing of the arteries that supply oxygen and blood to the myocardium (heart muscle). The narrowing is caused by a substance called plaque, which contains deposits of fat that cause blockages within the arteries. The blocked arteries then become hardened (atherosclerosis) and narrow, not allowing adequate…

    • 595 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    Bio 202 Exam 1: Summary

    • 6050 Words
    • 25 Pages

    The cardiovascular system consists of : heart (심장), and vessels (혈관), arteries (동맥), capillaries (모세혈관) and veins (정맥). A functional cardiovascular system is vital (필수적인) for supplying oxygen and nutrients to tissues and removing wastes from them. Paths of Circulation: Pulmonary(폐의) Circuit : carrying blood to the lungs and back 1. The pulmonary circuit is made up of vessels that convey blood from the right ventricle to the pulmonary arteries to the lungs, alveolar capillaries, and pulmonary veins leading from the lungs to the left atrium. 2. Carries the deoxygenated blood away from the heart to the lungs, and there by it brings the oxygen containing blood from lungs to the heart. Systemic Circuit : carrying blood from the heart to the rest of body 1. The systemic circuit includes the aorta (대동맥) and its branches leading to all body tissues as well as the system of veins returning blood to the right atrium. 2. Carries the oxygenated blood from the heart to the body, and also brings back the deoxygenated blood from the body to the heart. Structure of the Heart A. Size and Location of the Heart 1. The heart lies in the mediastinum under the sternum; its apex extends to the fifth intercostal space. 2. Approximately the size of the fist (주먹) 3. Location - Superior surface of diaphragm - Left of the midline - Anterior to the vertebral column, posterior to the sternum Coverings of the Heart 1. The pericardium(심장막) which encloses the heart. - Protects and anchors the heart - Prevents overfilling of the heart with blood - Allows for the heart to work in a relatively friction-free environment 2. It is made of two layers: I. The outer, tough connective tissue fibrous pericardium II. visceral pericardium (epicardium; 외심막) that surrounds the heart. 3. At the base of the heart, the visceral pericardium folds back to become the parietal pericardium that lines the fibrous pericardium. 4. Between the parietal and visceral pericardia is a potential space (pericardial cavity) filled…

    • 6050 Words
    • 25 Pages
    Powerful Essays
  • Powerful Essays

    Chapter 18 Notes

    • 1227 Words
    • 5 Pages

    Chapter 18: The Cardiovascular System: The Heart Heart Anatomy Approximately the size of a fist Location Enclosed in pericardium, a double-walled sac Pericardium Superficial fibrous pericardium Deep two-layered serous pericardium Layers of the Heart Wall Epicardium—visceral layer of the serous pericardium Myocardium Endocardium is continuous with endothelial lining of blood vessels Chambers Four chambers: two atria and two ventricles Atria: The Receiving Chambers Walls are ridged by pectinate muscles Vessels entering right atrium o Superior vena cava o Inferior vena cava o Coronary sinus Vessels entering left atrium o Right and left pulmonary veins Ventricles: The Discharging Chambers Walls are ridged by trabeculae carneae Papillary muscles project into the ventricular cavities Vessel leaving the right ventricle o Pulmonary trunk Vessel leaving the left ventricle o Aorta Pathway of Blood Through the Heart The heart is two side-by-side pumps o Right side is the pump for the pulmonary circuit  Vessels that carry blood to and from the lungs o Left side is the pump for the systemic circuit  Vessels that carry the blood to and from all body tissues Pathway of Blood Through the Heart Right atrium  tricuspid valve  right ventricle Right ventricle  pulmonary semilunar valve  pulmonary trunk  pulmonary arteries  lungs…

    • 1227 Words
    • 5 Pages
    Powerful Essays
  • Good Essays

    The myocardium, commonly referred to as the heart, acts as a pump for transporting blood around the body via a collective system, known as the cardiovascular system. This system has various components; blood vessels; mainly arteries, veins and capillaries. The cardiovascular system has four main functions within the body. Firstly to transport dissolved oxygen, hormones, nutrients, salts, enzymes and urea to cells located around various places within the body, whilst at the same time eliminating any waste products such as carbon dioxide and water. Secondly, to protect the body from infection and blood loss. Thirdly, to distribute heat around the body to enable a healthy temperature of 37oc and finally to aid the body to maintain fluid balance. This ‘human pump’ can be regarded as two pumps. The fist sized organ contains two muscular chambers; the upper chamber; the atrium and the lower; the ventricle. The right side of the heart pumps deoxygenated blood from the veins to the lungs for oxygenation, whilst the left side pumps oxygenated blood from the lungs to the body. It is important to note that the two sides are separated by a septum. The blood flows through the heart twice within one cycle, this is known as ‘double circulation’.…

    • 1354 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Heart Functions

    • 336 Words
    • 2 Pages

    The coronary arteries supply the cardiac muscle with the blood and in turn oxygen they need to…

    • 336 Words
    • 2 Pages
    Good Essays
  • Better Essays

    Anatomy 2 lab Guide

    • 2244 Words
    • 9 Pages

    Left Ventricle- receives oxygenated blood from the left atrium and pumps it into the largest artery in the systemic circuit called the aorta. The aorta then branches off to deliver the oxygenated blood to the body’s cells.…

    • 2244 Words
    • 9 Pages
    Better Essays
  • Satisfactory Essays

    7. Explain how the movements of the reattached arm might be altered after the reattachment.…

    • 253 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    2.02 Circulatory Answers

    • 668 Words
    • 3 Pages

    Thrombus: blood clot in blood vessel, usually caused by slow blood circulation, immobility, or changes in vessel walls.…

    • 668 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    Blood vessels carry blood throughout the entire body. The names of some blood vessels are related to the region which they supply or drain. Most named veins will have the same name of its accompanying artery. Review the blood vessels of the various regions of the body listed below.…

    • 803 Words
    • 7 Pages
    Powerful Essays
  • Good Essays

    The action potentials spread from the autorhythmic cells of the intrinsic conduction system (electrical event) to the _contractile__ cells. The resulting mechanical events cause a heartbeat.…

    • 262 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Coronary: of, relating to, affecting, or being the coronary arteries or veins of the heart:…

    • 1100 Words
    • 5 Pages
    Good Essays
  • Good Essays

    The heart lies in the thoratic cavity, organs associated with the heart are inferiorly, the hearts apex rested on the tendon of the diaphragm, superiorly, the great blood vessels, posteriorly the oesophagus, trachea and the left and right bronchus, laterally, the lungs and anteriorly the sternum and ribs. (Waugh& Grant 2014). The heart provides a constant blood circulation action and the blood vessels provide a network for the blood flow. The heart is the pump responsible for maintaining adequate circulation of oxygenated blood around the vascular network of the body, ( www.le.ac.uk) the right side of the heart pumps blood to the lungs (pulmonary circulation) and the left side receives oxygenated blood and supplies it to the rest of the body (systemic circulation). There are three types of blood vessel, arteries, capilleries and veins. Blood is pumped from the heart through the arteries at high pressure which could damage the tissue so it needs to go through the capillaires which are smaller low pressure blood vessels that are responsilbe for providing oxygen to the tissues, they also absord excess carbon dioxide and then deliver the blood into the veins which then supply the blood back to the heart. The heart generates its own electrical impulses, it does not rely on any other external mechanisn to make it beat. A normal heart rate is 60-80 times per minute, factors which can decrease or…

    • 800 Words
    • 4 Pages
    Good Essays
  • Good Essays

    What are the coronary circulatory routes and how does it compare to the portal circulatory route you ask? They are both routes but different in many ways because of how they circulate the blood throughout the body. The coronary circulatory system deals with how the blood of the heart circulates to help the heart function itself. But the systemic route differs from the other route. In the systemic route blood is moved through the body providing it with oxygen and nutrients while blood with no oxygen is sent back to the heart. When the pulmonary enters the left to part of the heart called the atrium oxygen goes through the pulmonary veins. After it leaves the left atrium and goes to the ventricle through a valve that is called the martial…

    • 256 Words
    • 2 Pages
    Good Essays
  • Good Essays

    The body is made up of a number of systems that all interlink and produce everything we need in order to survive. Within the body there is the digestive system; the circulatory system, the nervous system, the muscular system, the skeletal system and the reproductive system. These systems are all part of one another and they share organs, tissues and cells and that is how they interlink.…

    • 731 Words
    • 3 Pages
    Good Essays

Related Topics