Per312 Yelda: Layers of the Heart Pericardium

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 function of the aortic and pulmonary valves?

To prevent backflow of blood from the ventricles into the atria during systole
To allow backflow of blood from the ventricles into the atria during systole
To allow backflow of blood from the aorta and pulmonary trunk into the ventricles during diastole
To prevent backflow of blood from the aorta and pulmonary trunk into the ventricles during diastole (correct)

Where is the SA node located?

In the posterior wall of the right atrium near the entrance of the superior vena cava (correct)
In the interventricular septum
In the Bundle of His
In the floor of the right atrium near the opening of the coronary sinus

What is the role of the AV node in the cardiac conduction system?

It receives the impulse from the SA node and transmits it to the Bundle of His. (correct)
It spreads the impulse throughout both atria.
It generates the fastest rate of impulse generation.
It divides the impulse into the right and left bundle branches.

Which nervous system has the dominant effect on myocardial contractility?

The sympathetic nervous system has the dominant effect. (A) Signup and view all the answers

What are the two main branches of the right coronary artery (RCA)?

The Right posterior descending artery and the Right acute marginal artery (B) Signup and view all the answers

What is the name of the single vessel exiting the right ventricle?

Pulmonary trunk (D) Signup and view all the answers

What is the function of the pericardial fluid between the two layers of the pericardium?

To minimize friction during cardiac contraction (D) Signup and view all the answers

How many chambers make up each half of the heart?

Two (A) Signup and view all the answers

What is the function of the semilunar valves?

To allow blood to flow from the ventricles into the arteries (C) Signup and view all the answers

What is the purpose of the chordae tendineae in the right ventricle?

To anchor the tricuspid valve (C) Signup and view all the answers

What is the difference between the inflow and outflow regions of the right ventricle?

The inflow region receives blood from the right atrium, while the outflow region ejects blood into the pulmonary arteries (C) Signup and view all the answers