SAQ - Regulation of Blood Pressure & RAAS System
32 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the unit of measurement for blood pressure?

  • Pounds per square inch
  • Millimetres of water
  • Grams per centimeter
  • Millimetres of mercury (correct)

    • What is the term for the pressure in the blood vessels when the heart contracts?

  • Pulse pressure
  • Cardiac pressure
  • Diastolic pressure
  • Systolic pressure (correct)

    • What is the name of the reflex that regulates blood pressure in the short term?

  • Renin-angiotensin reflex
  • Baroceptor reflex (correct)
  • Vasopressor reflex
  • Cardiovascular reflex

    • What type of receptors are involved in the baroceptor reflex?

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

    What is the term for a blood pressure below 90/60 mmHg?

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

    What is the name of the system that regulates blood pressure in addition to the baroceptor reflex?

    <p>Renin-angiotensin system</p> Signup and view all the answers

    What happens when the brain detects a decrease in blood pressure?

    <p>Vasodilation and a decrease in heart rate</p> Signup and view all the answers

    What is the primary function of angiotensin II in the kidneys?

    <p>Promoting sodium reabsorption</p> Signup and view all the answers

    Where is the angiotensin-converting enzyme (ACE) primarily produced?

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

    What is the effect of aldosterone on the kidneys?

    <p>Promoting sodium and water retention</p> Signup and view all the answers

    What is the role of the renin-angiotensin-aldosterone system (RAAS) in blood pressure regulation?

    <p>Long-term regulation of blood pressure</p> Signup and view all the answers

    What is the effect of angiotensin II on the central nervous system?

    <p>Inducing the release of anti-diuretic hormone</p> Signup and view all the answers

    What is the primary function of the baroceptor reflex in regulating blood pressure?

    <p>To regulate blood pressure in the short term</p> Signup and view all the answers

    What is the role of afferent neurons in the baroceptor reflex?

    <p>To transmit action potentials from the baroreceptors to the cardiovascular centre</p> Signup and view all the answers

    What is the normal range of blood pressure?

    <p>120/80 mmHg</p> Signup and view all the answers

    What is the effect of an increase in arterial pressure on the baroreceptors?

    <p>It increases the transmission of action potentials to the cardiovascular centre</p> Signup and view all the answers

    What is the location of the low-pressure baroreceptors?

    <p>Carotid sinus</p> Signup and view all the answers

    What is the term for the pressure in the blood vessels between heartbeats?

    <p>Diastolic pressure</p> Signup and view all the answers

    What is the effect of the RAAS system on blood pressure?

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

    What is the location of the cardiovascular centre?

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

    What is the term for a blood pressure above 140/90 mmHg?

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

    What is the mechanism by which the body regulates blood pressure in the long term?

    <p>RAAS system</p> Signup and view all the answers

    What is the response of the brain to a decrease in blood pressure?

    <p>Stimulation of the sympathetic nervous system</p> Signup and view all the answers

    What is the role of macular densa cells in the kidneys?

    <p>Detecting reduced sodium chloride concentration</p> Signup and view all the answers

    What is the effect of angiotensin II on systemic arterioles?

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

    What is the function of the posterior pituitary gland in the renin-angiotensin-aldosterone system (RAAS)?

    <p>Releasing anti-diuretic hormone (ADH)</p> Signup and view all the answers

    What is the net effect of the renin-angiotensin-aldosterone system (RAAS) on blood pressure?

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

    What is the result of the brain's response to an increase in blood pressure?

    <p>Vasodilation and decreased heart rate</p> Signup and view all the answers

    What is the role of the liver in the renin-angiotensin-aldosterone system (RAAS)?

    <p>Producing angiotensinogen</p> Signup and view all the answers

    What is the effect of aldosterone on the proximal convoluted tubules of the kidneys?

    <p>Promoted sodium reabsorption</p> Signup and view all the answers

    What is the site of angiotensin-converting enzyme (ACE) production?

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

    What is the effect of angiotensin II on the hypothalamus?

    <p>Stimulation of thirst</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser