Circulatory Function, Part 1
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Questions and Answers

What is the primary function of the circulatory system?

  • To transport oxygen and nutrients to cells (correct)
  • To regulate body temperature
  • To produce energy for the body
  • To eliminate waste products from the body
  • What would happen if oxygen and nutrients aren't transported to cells?

  • The cells would remain unaffected
  • The cells would start to develop
  • The cells may die or become damaged (correct)
  • The cells would become stronger
  • What is the function of the atria in the heart?

  • To produce hormones
  • To collect blood returning to the heart from the rest of the body (correct)
  • To regulate blood pressure
  • To pump blood to the rest of the body
  • What is the main problem that may result if the circulatory system is not functioning properly?

    <p>Many problems may result</p> Signup and view all the answers

    What is transported to the periphery to be dissipated in the external environment?

    <p>Core heat</p> Signup and view all the answers

    What is the path of blood flow through the heart?

    <p>Right aorta → tricuspid valve → right ventricle → lungs</p> Signup and view all the answers

    Which of the following factors affects blood pressure through adjusting sodium and water excretion?

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

    What is the primary function of the renin-angiotensin-aldosterone system (RAAS) in relation to blood pressure regulation?

    <p>To adjust blood volume and vessel constriction</p> Signup and view all the answers

    Which of the following is a soft risk factor for heart disease?

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

    A person with a waist circumference of 38 inches is at a higher risk of developing hypertension due to?

    <p>Centrally located fat</p> Signup and view all the answers

    What is the primary focus in Stage 1 of hypertension management?

    <p>Lifestyle modifications</p> Signup and view all the answers

    Which of the following lifestyle changes can help reduce blood pressure?

    <p>Increasing potassium intake</p> Signup and view all the answers

    What is the main function of the arteries in the circulatory system?

    <p>To carry blood to tissues for tissue perfusion</p> Signup and view all the answers

    What is the primary component of the middle layer of blood vessels?

    <p>Smooth muscle</p> Signup and view all the answers

    What is the term for the resistance that blood encounters as it is pumped through vessels?

    <p>Peripheral vascular resistance</p> Signup and view all the answers

    What is the role of endothelial cells in the inner layer of blood vessels?

    <p>To provide a smooth, slippery surface to prevent platelet adherence and blood clotting</p> Signup and view all the answers

    What is the purpose of antihypertensive medications in Stage 2 of hypertension management?

    <p>To focus on one of the aspects that affect blood pressure, such as heart rate or cardiac contractility</p> Signup and view all the answers

    What is the role of cholesterol in the body?

    <p>As an essential component of cell membranes and steroid hormones</p> Signup and view all the answers

    What is the primary reason for high blood lipid levels in individuals with diabetes mellitus?

    <p>The inability of glucose to enter cells causes the breakdown of fat, leading to high blood lipid levels</p> Signup and view all the answers

    What is the main goal for LDL cholesterol levels?

    <p>&lt;100 mg/dL</p> Signup and view all the answers

    What is the term for the hardening of arteries?

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

    What happens to LDL cholesterol in the process of atherosclerosis?

    <p>It is deposited under the endothelium and digested by macrophages</p> Signup and view all the answers

    What is the result of lesions developing in the artery?

    <p>The endothelial layer is damaged and attracts platelets</p> Signup and view all the answers

    What is the risk of atherosclerosis?

    <p>Stroke and kidney damage</p> Signup and view all the answers

    What is the main reason for heart attacks and strokes?

    <p>Blockage in arteries</p> Signup and view all the answers

    What determines the symptoms of arterial blockage?

    <p>Location of the blockage</p> Signup and view all the answers

    What is the term for poor blood flow that can lead to tissue damage?

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

    What is the term for permanent damage due to lack of oxygen and blood flow?

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

    What is the term for the circulation of blood in certain tissues where there are little connecting channels?

    <p>Collateral circulation</p> Signup and view all the answers

    What is the goal of lifestyle modifications in managing arterial blockage?

    <p>To control diet and lower cholesterol</p> Signup and view all the answers

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