Cerebral Circulation Quiz

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

Which arteries are part of the anterior cerebral circulation?

  • Internal carotid arteries (correct)
  • Vertebral arteries
  • Posterior cerebral artery
  • Basilar artery

Which arteries are part of the posterior cerebral circulation?

  • Basilar artery (correct)
  • Internal carotid arteries
  • Anterior cerebral artery
  • Vertebral arteries

What is the average perfusion of blood per 100 grams of brain tissue per minute?

  • 18 to 20 millilitres
  • 50 to 54 millilitres (correct)
  • 750 millilitres
  • 8 to 10 millilitres

Which arteries supply the anterior brain?

<p>Internal carotid arteries (C)</p> Signup and view all the answers

What is the typical rate of cerebral blood flow in an adult human?

<p>750 milliliters per minute (B)</p> Signup and view all the answers

What do veins carry back to the heart in cerebral circulation?

<p>Carbon dioxide, lactic acid, and other metabolic products (B)</p> Signup and view all the answers

Which of the following is true about cerebral perfusion pressure (CPP)?

<p>CPP is the difference between mean arterial pressure (MAP) and intracranial pressure (ICP) (D)</p> Signup and view all the answers

What happens to cerebral blood vessels when systemic blood pressure is raised?

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

What is the effect of higher levels of carbon dioxide in the blood on cerebral blood vessels?

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

What is the relationship between arterial partial pressure of carbon dioxide (PaCO2) and cerebral blood flow (CBF)?

<p>CBF decreases with a decrease in PaCO2 (C)</p> Signup and view all the answers

Flashcards are hidden until you start studying

Study Notes

Cerebral Circulation

  • Anterior cerebral circulation involves the anterior cerebral artery and the anterior communicating artery.
  • Posterior cerebral circulation involves the posterior cerebral artery and the posterior communicating artery.

Blood Supply and Flow

  • Anterior brain is supplied by the anterior cerebral artery and the middle cerebral artery.
  • Typical rate of cerebral blood flow in an adult human is approximately 750 mL/min.

Cerebral Blood Flow Regulation

  • Cerebral perfusion pressure (CPP) is the difference between mean arterial pressure and intracranial pressure.
  • When systemic blood pressure is raised, cerebral blood vessels constrict (vasoconstriction) to maintain constant blood flow.
  • Higher levels of carbon dioxide in the blood cause cerebral blood vessels to dilate (vasodilation), increasing blood flow.

Cerebral Perfusion and Veins

  • Veins carry deoxygenated blood back to the heart in cerebral circulation.
  • Average perfusion of blood per 100 grams of brain tissue per minute is approximately 50-60 mL.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

More Like This

Use Quizgecko on...
Browser
Browser