Disorders of Cardiovascular Function- COMMON DEFINITION

What is the correct blood flow of the heart?

Right atrium—→ Right Ventricle—→ Pulmonary Artery——> Lungs —→ Pulmonary Veins——> Left Atrium——> Left Ventricle

The RIGHT side of the heart ______

Sends blood to the lungs

The LEFT side of the heart _______

Sends blood to the body

RIGHT ATRIUM:

Receives oxygen-poor blood returning to the body.

RIGHT VENTRICLE:

Pumps the blood towards the lungs

LUNGS:

Blood releases carbon dioxide and picks up oxygen

LEFT ATRIUM:

Receives oxygen-rich blood from the lungs

LEFT VENTRICLE:

Pumps oxygen- rich blood out to the body through the aorta

Atria receive; ventricles pump

True

Pulmonary artery goes to the lungs; pulmonary veins return from the 

lungs

True

The left ventricle pumps blood to the body through the aorta

True

The pathway of blood:

Body → vena cava → right atrium → right ventricle → pulmonary artery → lungs → pulmonary veins → left atrium → left ventricle → aorta → body

Why are the heart valves important?

Valves keep blood moving in the correct direction and prevent it from flowing backward.

What are the four HEART VALVES?

• Tricuspid

• Pulmonary

• Mitral (bicuspid)

• Aortic

What is the electrical system?

Electrical signals coordinate the heartbeat

What are the electrical systems and their definitions?

• SA node: the heart’s natural pacemaker; normally starts the signal.

• AV node: briefly delays the signal so the ventricles can fill.

• The signal then travels through pathways that help the ventricles contract.

Understand when the heart squeezes and relaxes?

• Systole: the heart muscle contracts, squeezing blood out.

• Diastole: the heart muscle relaxes, allowing its chambers to fill with blood.

What is Cardiac Output?

Heart rate x Stroke Volume

A patient has a problem with the valve located between the left atrium and left ventricle. Which valve is affected?

Mitral valve