Cardiovascular System - Heart part I

Where is the heart located in the body?

• Left hypochondriac region

• Mediastinum

• Peritoneal cavity

• Pelvic cavity

Which layer of the heart wall is responsible for contraction?

• Endocardium

• Epicardium

• Myocardium

• Pericardium

Blood returning from the head enters the heart through which vessel?

• Inferior vena cava

• Pulmonary vein

• Superior vena cava

• Aorta

Blood from the left leg returns to the heart via the:

• Coronary sinus

• Inferior vena cava

• Superior vena cava

• Pulmonary artery

Which heart chamber receives deoxygenated blood from the body?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

The pulmonary trunk carries:

• Oxygenated blood to the lungs

• Deoxygenated blood to the lungs

• Oxygenated blood to the heart

• Deoxygenated blood to the body

The thickest chamber of the heart is the:

• Right atrium

• Right ventricle

• Left atrium

• Left ventricle

Which valve prevents backflow into the right atrium?

• Bicuspid valve

• Aortic semilunar valve

• Tricuspid valve

• Pulmonary semilunar valve

Mitral valve prolapse affects which valve?

• Aortic valve

• Pulmonary valve

• Tricuspid valve

• Bicuspid valve

Systemic circulation carries blood from the heart to the:

• Lungs

• Body tissues

• Heart muscle

• Pulmonary veins