EKG Practice Assessment - Section 1

The bottom of the heart tilts

• backwards and down, towards the right side of the body
• forwards and down, towards the left side of the body
• backwards and down, towards the left side of the body
• forwards and down, towards the right side of the body

The outer layer of the heart is called

• myocardium
• endocardium
• atria
• epicardium

What surrounds the heart and acts as a tough, protective sac

• pericardium
• myocardium
• epicardium
• endocardium

The left atrium receives oxygenated blood through

• pulmonary veins
• the inferior and superior vena cavae
• epicardium
• parietal layer

The right ventricle receives blood from the right atrium and pumps out through

• the pulmonary veins
• the aorta
• myocardium
• the pulmonary arteries

How many valves does the heart contain?

• 3
• 2
• 4
• 5

What are the two AV valves called?

• tricuspid and mitral
• left atrium and left ventricle
• pulmonic valve and aortic valve
• superior vena cava and inferior vena cava

What are the semilunar valves called?

• right atrium and right ventricle
• pulmonic valve and aortic valve
• tricuspid and mitral valve
• superior vena cava and inferior vena cava

What happens during diastole?

• left atrium is filling up with blood, and aortic valve is closed

• left ventricle is filling up with the blood, and aortic valve is closed

• left ventricle is filling up with blood, and aortic valve is open

• left atrium is filling up with blood, and aortic valve is open

What are the four characteristics of cardiac cells?

• automaticity, excitability, conductivity, and controllability

• conductivity, transitivity, automaticity, and excitability

• excitability, conductivity, automaticity, and contractility

• contractility, automaticity, transitivity, and excitability