Pre assessment - Lesson 1 - Heart

Where does deoxygenated blood enter the heart?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

What is the innermost layer of the heart wall called?

• Myocardium

• Epicardium

• Endocardium

• Pericardium

What are the flap-like structures that make up the atrioventricular valves?

• Papillary muscles

• Chordae tendineae

• Semilunar valves

• Atria

Which chamber of the heart has thicker muscular walls due to its role in pumping blood to the entire body?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

Which vessels supply blood to the heart muscle itself?

• Coronary arteries

• Pulmonary arteries

• Aorta

• Superior vena cava

The heart is mainly located in which body cavity?

• Cranial cavity

• Thoracic cavity

• Abdominal cavity

• Pelvic cavity

Which valve prevents the backflow of blood from the right ventricle to the right atrium?

• Aortic valve

• Pulmonary valve

• Tricuspid valve

• Mitral valve

Deoxygenated blood returns to the heart from the body through which vessel?

• Pulmonary artery

• Pulmonary vein

• Superior vena cava

• Inferior vena cava

What structure separates the left and right sides of the heart, preventing the mixing of oxygenated and deoxygenated blood?

• Interventricular septum

• Atrioventricular septum

• Aortic septum

• Coronary septum

Which artery carries oxygenated blood away from the heart to the rest of the body?

• Pulmonary artery

• Coronary artery

• Aorta

• Pulmonary vein