Neural and Hormonal Regulation of Cardiovascular System
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Questions and Answers

What is the role of baroreceptors in the cardiovascular system?

  • Regulate blood viscosity in the circulatory system
  • Control the release of hormones for blood pressure regulation
  • Detect changes in blood pressure and send signals to the medulla (correct)
  • Aid in the breakdown of fats in the blood

    • Which mechanism is responsible for immediate to long-term regulation of systemic blood pressure?

  • Local control mechanisms
  • Humoral control mechanism (correct)
  • Autonomic nervous system
  • Circulating vasoconstrictors

    • In case neural control mechanisms are insufficient due to excessive blood loss, which system comes into play to help regulate blood pressure?

  • RAAS (Renin-Angiotensin-Aldosterone System) (correct)
  • Central nervous system
  • Lymphatic system
  • Endocrine system

    • Where does the information from baroreceptors go after detecting changes in blood pressure?

    <p>Medulla (B)</p> Signup and view all the answers

    What is the function of the carotid sinus reflex in the context of cardiovascular control mechanisms?

    <p>Detect changes in blood pressure and adjust vascular resistance (A)</p> Signup and view all the answers

    What is the timeframe within which neural responses occur in regulating physiological changes related to blood pressure?

    <p>Seconds (D)</p> Signup and view all the answers

    What is the function of baroreceptors in the cardiovascular system?

    <p>Monitor changes in blood pressure (B)</p> Signup and view all the answers

    In the hormonal regulation of the cardiovascular system, which hormone is primarily responsible for increasing blood pressure?

    <p>Adrenaline (A)</p> Signup and view all the answers

    Which part of the brain plays a crucial role in regulating the cardiovascular system by receiving input from baroreceptors and chemoreceptors?

    <p>Medulla oblongata (C)</p> Signup and view all the answers

    What is the main role of the carotid sinus reflex in the regulation of the cardiovascular system?

    <p>Regulate heart rate and blood pressure (C)</p> Signup and view all the answers

    How does the autonomic nervous system contribute to the neural regulation of the cardiovascular system?

    <p>By modulating heart rate and blood vessel diameter (D)</p> Signup and view all the answers

    What is the main function of baroreceptors in the cardiovascular system?

    <p>Monitor blood pressure changes (A)</p> Signup and view all the answers

    Which of the following is NOT a factor affecting the heart and circulation according to the text?

    <p>Osmoreceptor reflex (C)</p> Signup and view all the answers

    What is the role of the Renin–angiotensin-aldosterone system (RAAS) in cardiovascular regulation?

    <p>Promote water and salt retention (D)</p> Signup and view all the answers

    Which hormone is NOT mentioned in the text as a circulating vasoconstrictor?

    <p>Aldosterone (B)</p> Signup and view all the answers

    What is the primary function of the Carotid sinus reflex in the cardiovascular system?

    <p>Maintain blood pressure stability (B)</p> Signup and view all the answers

    How does the medulla contribute to the regulation of the cardiovascular system?

    <p>By integrating neural signals for cardiovascular control (B)</p> Signup and view all the answers

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