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
Download our mobile app to listen on the go
Get App

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

Anterior cerebral circulation

Internal carotid arteries.

Posterior cerebral circulation?

Basilar artery.

Average brain tissue perfusion

50 to 54 milliliters.

Arteries supplying the anterior brain

Internal carotid arteries.

Signup and view all the flashcards

Typical cerebral blood flow

750 milliliters per minute.

Signup and view all the flashcards

Veins carry back what?

Carbon dioxide, lactic acid, and other metabolic products.

Signup and view all the flashcards

Cerebral Perfusion Pressure (CPP)

CPP is the difference between mean arterial pressure (MAP) and intracranial pressure (ICP).

Signup and view all the flashcards

Cerebral vessels under high systemic BP

They constrict.

Signup and view all the flashcards

Effect of high CO2 on cerebral vessels

They dilate.

Signup and view all the flashcards

PaCO2 and Cerebral Blood Flow (CBF)

CBF decreases with a decrease in PaCO2.

Signup and view all the flashcards

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