Right Atrium Function
25 Questions
1 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 primary function of the right atrium in the heart?

  • To pump oxygenated blood to the lungs
  • To receive deoxygenated blood from the body (correct)
  • To regulate blood pressure
  • To filter waste from the blood

What is the characteristic of the blood that is returned to the right atrium?

  • Poor in oxygen (correct)
  • Rich in oxygen
  • Low in carbon dioxide
  • High in carbon dioxide

Where is the blood pumped to after it leaves the right ventricle?

  • The inferior vena cava
  • The superior vena cava
  • The aorta
  • The pulmonary artery (correct)

What is the primary purpose of the blood being pumped to the lungs?

<p>To re-oxygenate and remove carbon dioxide (B)</p> Signup and view all the answers

What is the direction of blood flow in the heart, in relation to the right atrium and ventricle?

<p>From atrium to ventricle to lungs (B)</p> Signup and view all the answers

What type of capillaries are primarily found in skeletal muscles, finger, gonads, and skin?

<p>Continuous capillaries (C)</p> Signup and view all the answers

What is the approximate diameter of fenestrations in endothelial cells?

<p>60-80 nm (C)</p> Signup and view all the answers

What can pass through the fenestrations in fenestrated capillaries?

<p>Small molecules and limited amounts of protein (A)</p> Signup and view all the answers

What is the function of fenestrations in fenestrated capillaries?

<p>To allow components to bypass endothelial cells (C)</p> Signup and view all the answers

What is the term for the small openings in endothelial cells?

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

What is the primary function of the size of muscular arteries?

<p>To differentiate them from elastic arteries (A)</p> Signup and view all the answers

In which layer of the artery is the internal elastic layer (IEL) located?

<p>Between the tunica intima and tunica media (A)</p> Signup and view all the answers

What is characteristic of the elastin sheet in muscular arteries compared to elastic arteries?

<p>It is thinner and more reduced (C)</p> Signup and view all the answers

What is the primary function of the internal elastic layer (IEL) in muscular arteries?

<p>The function is not specified in the text (C)</p> Signup and view all the answers

Which of the following is a characteristic unique to elastic arteries?

<p>A thicker sheet of elastin (A)</p> Signup and view all the answers

What type of tissue surrounds the blood vessels and nerves that supply the heart?

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

What is the primary function of the adipose tissue in the pericardial cavity?

<p>To cushion the heart and reduce friction (C)</p> Signup and view all the answers

Which of the following statements about the epicardium is TRUE?

<p>It is a region where the blood vessels and nerves that supply the heart are located (B)</p> Signup and view all the answers

What is the purpose of the pericardial cavity?

<p>To reduce friction between the heart and the surrounding tissues (D)</p> Signup and view all the answers

What is the relationship between the blood vessels and nerves that supply the heart and the epicardium?

<p>They are surrounded by the epicardium (A)</p> Signup and view all the answers

What is the primary function of capillaries that allows for the exchange of oxygen, nutrients, and waste products between the blood and tissues?

<p>Facilitation of diffusion and ultrafiltration (B)</p> Signup and view all the answers

Which of the following features of capillaries facilitates the exchange of substances between the blood and tissues?

<p>Large diameter and thin walls (C)</p> Signup and view all the answers

What is the classification of capillaries based on the features of the endothelium and the basal lamina?

<p>Continuous, fenestrated, and sinusoidal (C)</p> Signup and view all the answers

Which type of capillary has a fenestrated endothelium, allowing for rapid exchange of molecules?

<p>Fenestrated capillaries (C)</p> Signup and view all the answers

What is the main function of the basal lamina in capillaries?

<p>To provide structural support (A)</p> Signup and view all the answers
Use Quizgecko on...
Browser
Browser