EHR519 Week 1 Lecture 2A: Cardiovascular System
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Questions and Answers

What is the term for the point where two blood vessels merge?

  • Anastomosis (correct)
  • Precapillary sphincter
  • Thoroughfare channel
  • Metarteriole
  • What is the function of precapillary sphincters in capillary beds?

  • To control which beds are well perfused (correct)
  • To regulate blood pressure
  • To increase blood flow to the heart
  • To decrease oxygen delivery to the muscles
  • What is the term for the blood vessel that continues through the capillary bed to the venule?

  • Arteriole
  • Metarteriole
  • Venule
  • Thoroughfare channel (correct)
  • What is the term for the connection between an arteriole and a venule?

    <p>Arteriovenous anastomosis</p> Signup and view all the answers

    What is the term for a network of capillaries?

    <p>Capillary bed</p> Signup and view all the answers

    What is the term for a blood vessel that supplies a capillary bed?

    <p>Metarteriole</p> Signup and view all the answers

    Which of the following vessels carries oxygenated blood from the lungs to the left side of the heart?

    <p>Pulmonary vein</p> Signup and view all the answers

    Which part of the heart receives lesser oxygenated blood from the inferior and superior venae cavae?

    <p>Right atrium</p> Signup and view all the answers

    What is the primary function of the pulmonary circuit?

    <p>To carry blood to the lungs for gas exchange and back to the heart</p> Signup and view all the answers

    What is the main difference between the oxygen-rich blood and oxygen-poor blood in the circulatory system?

    <p>Oxygen-rich blood has less CO2, while oxygen-poor blood has more CO2</p> Signup and view all the answers

    Which of the following is a risk factor for cardiopulmonary conditions?

    <p>High blood pressure</p> Signup and view all the answers

    What is the term for the innermost layer of a blood vessel that is exposed to blood?

    <p>Tunica intima</p> Signup and view all the answers

    Which of the following is a complication of cardiopulmonary conditions that must be accounted for when applying exercise interventions?

    <p>Respiratory failure</p> Signup and view all the answers

    What is the primary function of the systemic circuit?

    <p>To supply oxygenated blood to all tissues of the body</p> Signup and view all the answers

    What is the primary function of the endothelium in the cardiovascular system?

    <p>To produce nitric oxide</p> Signup and view all the answers

    Which of the following is a complication that must be accounted for when applying exercise interventions to individuals with cardiopulmonary conditions?

    <p>Hypertension</p> Signup and view all the answers

    What is the role of shear stress in the cardiovascular system?

    <p>To stimulate nitric oxide production</p> Signup and view all the answers

    Which of the following is a risk factor for cardiovascular disease that must be considered when applying exercise interventions?

    <p>All of the above</p> Signup and view all the answers

    What is the primary function of the right and left atria (auricles) in the cardiovascular system?

    <p>To receive deoxygenated blood from the body</p> Signup and view all the answers

    What is the pathophysiological underpinning of the importance of exercise in the management of cardiovascular conditions?

    <p>All of the above</p> Signup and view all the answers

    Which of the following is a co-morbidity that must be accounted for when applying exercise interventions to individuals with cardiopulmonary conditions?

    <p>All of the above</p> Signup and view all the answers

    What is the role of the conduction system in the cardiovascular system?

    <p>To coordinate the heartbeat</p> Signup and view all the answers

    Study Notes

    Cardiovascular System Refresher

    • The heart has 4 chambers: right and left atria (auricles) and right and left ventricles
    • The pulmonary circuit carries blood to the lungs for gas exchange and back to the heart
    • The systemic circuit supplies oxygenated blood to all tissues of the body and returns it to the heart
    • Blood flows from the right side of the heart to the lungs and from the left side of the heart to the rest of the body

    Circulatory System

    • The tunica interna (tunica intima) lines the blood vessel and is exposed to blood
    • Endothelium covers the inner surface of blood vessels
    • Capillaries are organized into networks called capillary beds
    • Precapillary sphincters control which beds are well perfused
    • Thoroughfare channels are metarterioles that continue through capillary beds to venules
    • Anastomosis is the point where two blood vessels merge

    Prevalence of Cardiovascular Disease in Australia

    • Cardiovascular disease is a significant health issue in Australia
    • The prevalence of cardiovascular disease in Australia is high and requires attention

    Pathophysiological Underpinnings

    • Endothelial dysfunction is a key factor in cardiovascular conditions
    • Nitric oxide plays a crucial role in cardiovascular health
    • Inflammation is a critical component of cardiovascular disease
    • Shear stress is another important factor in cardiovascular health

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    Description

    Learn about the Cardiovascular System and its components, including the role of exercise in maintaining a healthy heart. This quiz is based on the Week 1 Lecture 2A of EHR519 course.

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