The Heart Flashcards
What is the primary function of the heart?
To pump blood throughout the body.
True or False: The heart has four chambers.
True.
Fill in the blank: The two upper chambers of the heart are called the ______.
atria.
What are the names of the two lower chambers of the heart?
Ventricles.
Which side of the heart is responsible for pumping oxygenated blood?
The left side.
What is the function of the right atrium?
To receive deoxygenated blood from the body.
Multiple Choice: Which valve prevents backflow into the left atrium?
Mitral valve.
True or False: The heart is a muscle.
True.
What is the name of the tissue that makes up the heart?
Cardiac muscle.
Fill in the blank: The ______ circulatory system carries blood from the heart to the lungs.
pulmonary.
What is the role of the left ventricle?
To pump oxygenated blood to the body.
Multiple Choice: Which structure initiates the heartbeat?
Sinoatrial (SA) node.
What is the role of the right ventricle?
To pump deoxygenated blood to the lungs.
True or False: The heart can function without nervous system input.
True.
What connects the atria and ventricles?
Atrioventricular (AV) valves.
Fill in the blank: The ______ is the outer layer of the heart.
pericardium.
What is cardiac output?
The amount of blood the heart pumps in one minute.
Multiple Choice: Which vessel carries oxygenated blood away from the heart?
Aorta.
What is the function of the coronary arteries?
To supply blood to the heart muscle.
True or False: The heart rate is influenced by hormones.
True.
What is the normal resting heart rate range for adults?
60 to 100 beats per minute.
Fill in the blank: The ______ phase of the heartbeat is when the heart muscle relaxes.
diastole.
What is the role of the atrioventricular (AV) node?
To delay the electrical signal before it enters the ventricles.
Multiple Choice: Which part of the heart receives blood from the lungs?
Left atrium.
True or False: Blood flows from the left ventricle into the right atrium.
False.
What is the significance of the heart’s electrical conduction system?
It coordinates the heartbeat.
