The Heart Flashcards
What is the primary function of the heart?
To pump blood throughout the body.
True or False: The heart is a muscular organ.
True.
Fill in the blank: The heart consists of _____ chambers.
four
What are the names of the four chambers of the heart?
Left atrium, right atrium, left ventricle, right ventricle.
What is the function of the left ventricle?
To pump oxygenated blood to the body.
What is the role of the right atrium?
To receive deoxygenated blood from the body.
Multiple Choice: Which valve prevents backflow into the left atrium?
Mitral valve.
What is the name of the tissue that makes up the heart?
Cardiac muscle.
True or False: The heart has its own electrical system.
True.
What is the purpose of the sinoatrial (SA) node?
To act as the heart’s natural pacemaker.
Fill in the blank: Blood is supplied to the heart muscle through the _____ arteries.
coronary
What is the function of the pulmonary arteries?
To carry deoxygenated blood from the heart to the lungs.
What is the name of the blood vessel that carries oxygenated blood from the heart to the body?
Aorta.
Multiple Choice: Which part of the heart receives blood from the lungs?
Left atrium.
What is the role of the tricuspid valve?
To prevent backflow from the right ventricle to the right atrium.
True or False: The heart can function without input from the nervous system.
True.
What is the term for the contraction phase of the heart cycle?
Systole.
What is the term for the relaxation phase of the heart cycle?
Diastole.
Fill in the blank: The heart is located in the _____ cavity.
thoracic
What is cardiac output?
The amount of blood the heart pumps in one minute.
Multiple Choice: What is the average resting heart rate for adults?
60 to 100 beats per minute.
What is the significance of the heart’s left side?
It handles oxygenated blood.
True or False: The right side of the heart deals with oxygenated blood.
False.
What is the role of the aortic valve?
To prevent backflow from the aorta into the left ventricle.
What structure separates the left and right sides of the heart?
Septum.
Fill in the blank: The _____ veins return deoxygenated blood from the body to the right atrium.
vena
What is the effect of exercise on heart rate?
It increases heart rate.
Multiple Choice: Which condition is characterized by a rapid heart rate?
Tachycardia.
What is the primary purpose of the heart valves?
To ensure unidirectional blood flow.
True or False: The heart can grow larger in response to increased demand.
True.
What is heart failure?
A condition where the heart cannot pump enough blood to meet the body’s needs.
Fill in the blank: The _____ is a protective sac surrounding the heart.
pericardium
What is the role of the pulmonary veins?
To carry oxygenated blood from the lungs to the heart.
Multiple Choice: Which part of the heart has thicker walls, the atria or ventricles?
Ventricles.
What is the function of the coronary arteries?
To supply blood to the heart muscle itself.
What physiological process is responsible for the heart’s rhythmic contractions?
Electrical conduction system.
