blood flow through the heart Flashcards
What is the primary function of the heart?
To pump blood throughout the body.
How many chambers does the heart have?
Four chambers.
Name the four chambers of the heart.
Right atrium, right ventricle, left atrium, left ventricle.
Which chamber receives deoxygenated blood from the body?
Right atrium.
True or False: The left ventricle pumps oxygenated blood to the lungs.
False.
What is the role of the right ventricle?
To pump deoxygenated blood to the lungs.
Fill in the blank: Blood enters the left atrium from the _____.
lungs.
What valve prevents backflow of blood from the left ventricle to the left atrium?
Bicuspid (mitral) valve.
Which valve is located between the right atrium and right ventricle?
Tricuspid valve.
What is the function of the pulmonary valve?
To prevent backflow of blood from the pulmonary artery to the right ventricle.
True or False: Oxygenated blood is pumped from the left ventricle into the aorta.
True.
What is the name of the circuit that carries blood from the heart to the lungs and back?
Pulmonary circulation.
What type of circulation carries oxygenated blood from the heart to the rest of the body?
Systemic circulation.
Which structure in the heart is responsible for initiating the heartbeat?
Sinoatrial (SA) node.
Fill in the blank: Blood flows from the left ventricle into the _____ artery.
aorta.
What is the purpose of the coronary arteries?
To supply blood to the heart muscle itself.
True or False: The heart is a muscular organ that works involuntarily.
True.
What is the term for the phase of the heartbeat when the heart muscle contracts?
Systole.
What occurs during diastole?
The heart muscle relaxes and the chambers fill with blood.
Name the structure that separates the left and right sides of the heart.
Septum.
What is the role of the atrioventricular (AV) node?
To relay electrical signals from the atria to the ventricles.
Fill in the blank: The _____ veins carry deoxygenated blood from the body to the right atrium.
vena cava.
What is the function of the aortic valve?
To prevent backflow of blood from the aorta to the left ventricle.
True or False: Blood flow through the heart is a one-way system.
True.
