Nervous Mechanism Cardiovascular Centers in Medulla Quiz
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Questions and Answers

What is the main stimulus for the release of Atrial Naturetic Peptide (ANP)?

  • Decrease in extracellular fluid volume
  • Increase in heart rate
  • Decrease in venous return
  • Decrease in NaCl in plasma (correct)

Where is Atrial Naturetic Peptide (ANP) primarily secreted from?

  • Atrial muscle cells (correct)
  • Renal tubules
  • Pulmonary vessels
  • Juxtaglomerular cells

Which of the following is a circulating vasoconstrictor substance according to the text?

  • Angiotensin II (correct)
  • Catecholamines
  • Histamine
  • Atrial Naturetic Peptide

What is the initial event triggering the synthesis of Angiotensin II as described in the text?

<p>Decrease in renal blood flow (D)</p> Signup and view all the answers

Which enzyme is responsible for transforming Angiotensin-I into Angiotensin-II?

<p>Angiotensin-converting enzyme (C)</p> Signup and view all the answers

In response to hemorrhage, which substance's secretion is stimulated as per the text?

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

What effect does Atrial Naturetic Peptide have on arterial blood pressure?

<p><strong>Decreases</strong> arterial blood pressure (C)</p> Signup and view all the answers

What is the source of angiotensinogen?

<p><strong>Liver</strong> cells (D)</p> Signup and view all the answers

Vasodilation is primarily attributed to which of the following substances?

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

Renal blood flow, which acts as a stimulus for angiotensin II secretion, is especially important for the functioning of which body system?

<p><strong>Urinary system</strong> (B)</p> Signup and view all the answers

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