Physics of Bloodflow
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Questions and Answers

Which of the following symptoms did Mio experience when she had a sudden onset of dizziness and felt she would faint?

  • Nausea and vomiting
  • Blurred vision and headache
  • Excessive sweating and palpitations (correct)
  • Chest pain and shortness of breath
  • What was Mio's blood pressure when she was laying down in the supine position?

  • 162/110 mm Hg
  • 133/64 mm Hg (correct)
  • 102/65 mm Hg
  • Not mentioned in the text
  • What medications were discontinued in Mio's patient plan?

  • Furosemide and propafenone (correct)
  • Metoprolol and furosemide
  • Propafenone and meclizine
  • Not mentioned in the text
  • Which of the following is true about the regulation of blood flow to the skin?

    <p>It is regulated by local factors operating within the skin</p> Signup and view all the answers

    What influences cardiovascular function?

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

    How are cardiovascular responses to exercise achieved?

    <p>Through changes in the activity of autonomic nerves to the heart and blood vessels</p> Signup and view all the answers

    Which of the following is the primary function of capillaries?

    <p>Permitting exchange of materials between the blood and the tissues</p> Signup and view all the answers

    What is the formula for mean arterial pressure (MAP)?

    <p>MAP = CO * TPR</p> Signup and view all the answers

    What is the purpose of the lymphatic system?

    <p>Transporting excess filtrate back to the blood</p> Signup and view all the answers

    Which of the following is a short-term regulatory mechanism for mean arterial pressure (MAP)?

    <p>Baroreceptor reflex</p> Signup and view all the answers

    During Mio's attempts to stand, her heart rate increases while her blood pressure decreases. Why does this happen?

    <p>The baroreceptor reflex is compensating for the drop in blood pressure in order to increase blood perfusion to the brain.</p> Signup and view all the answers

    What is the main influence on vascular resistance in the systemic circuit?

    <p>Vessel radius</p> Signup and view all the answers

    Which blood vessels function as a pressure reservoir that maintains blood flow throughout the cardiac cycle?

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

    What is the average arterial pressure during the cardiac cycle called?

    <p>Mean arterial pressure (MAP)</p> Signup and view all the answers

    Study Notes

    Symptoms Experienced by Mio

    • Experienced sudden dizziness and near-fainting.

    Blood Pressure in Supine Position

    • Blood pressure in the supine position was measured but specific value not provided.

    Medications Discontinued

    • Certain medications in Mio's treatment plan were stopped, although specifics are unspecified.

    Regulation of Blood Flow to the Skin

    • Regulation of blood flow to the skin involves thermoregulation and nutrient delivery.

    Influences on Cardiovascular Function

    • Cardiovascular function is influenced by physical activity, hormonal changes, and neural regulation.

    Cardiovascular Responses to Exercise

    • Responses are achieved via increased heart rate, stroke volume, and redistribution of blood flow.

    Primary Function of Capillaries

    • Capillaries facilitate the exchange of nutrients, gases, and wastes between blood and tissues.

    Formula for Mean Arterial Pressure (MAP)

    • MAP can be calculated using the formula: MAP = Diastolic BP + 1/3(Systolic BP - Diastolic BP).

    Purpose of the Lymphatic System

    • The lymphatic system is responsible for fluid balance, immune response, and transporting lymph.

    Short-term Regulatory Mechanism for MAP

    • Autonomic nervous system adjustments serve as short-term regulatory mechanisms for MAP.

    Heart Rate and Blood Pressure Response

    • During attempts to stand, heart rate increases while blood pressure decreases due to gravity-induced blood pooling.

    Main Influence on Vascular Resistance

    • Vascular resistance in the systemic circuit is primarily influenced by vessel diameter.

    Blood Vessels as Pressure Reservoirs

    • Arteries, particularly the elastic arteries, function as pressure reservoirs, allowing continuous blood flow throughout the cardiac cycle.

    Average Arterial Pressure during Cardiac Cycle

    • The average arterial pressure during the cardiac cycle is referred to as the mean arterial pressure (MAP).

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    Related Documents

    Chapter 14 Summary PDF

    Description

    Test your knowledge on the role of arterioles in regulating blood flow and maintaining mean arterial pressure (MAP). Explore how organ vascular resistance and MAP influence blood flow through different systemic organs. Assess your understanding of the intrinsic control of organ vascular resistance and the factors that determine organ blood flow.

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