Anatomy of the Heart Atria
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Questions and Answers

What is the function of the atria when they are relaxed?

  • Pump blood into the ventricles
  • Receive blood from the body and lungs (correct)
  • Contract to pump blood to the body
  • Oxygenate the blood from the lungs

    • What is the term for the singular form of the atria?

  • Ventricle
  • Atrium (correct)
  • Atria
  • Myocardium

    • Which atrium receives blood from the lungs?

  • Neither atrium receives blood from the lungs
  • Left atrium (correct)
  • Both atria receive blood from the lungs
  • Right atrium

    • What is the function of the atria when they are contracted?

    <p>Pump blood into the ventricles</p> Signup and view all the answers

    What is the term for the plural form of the atrium?

    <p>Atria</p> Signup and view all the answers

    The left atrium receives blood from the body.

    <p>False</p> Signup and view all the answers

    The atria pump blood into the ventricles when they are relaxed.

    <p>False</p> Signup and view all the answers

    There are three atria in the heart.

    <p>False</p> Signup and view all the answers

    The right atrium receives blood from the lungs and the body.

    <p>False</p> Signup and view all the answers

    The atria are located at the base of the heart.

    <p>True</p> Signup and view all the answers

    What is the function of the ventricles when they are relaxed?

    <p>Receive blood from the atria</p> Signup and view all the answers

    Which blood vessel does the left ventricle pump blood into?

    <p>Aorta</p> Signup and view all the answers

    What divides the left and right sides of the heart?

    <p>Interventricular septum</p> Signup and view all the answers

    What is the destination of the blood pumped by the right ventricle?

    <p>The lungs</p> Signup and view all the answers

    Where are the ventricles located in the heart?

    <p>At the apex of the heart</p> Signup and view all the answers

    The left ventricle pumps blood into the pulmonary artery.

    <p>False</p> Signup and view all the answers

    The ventricles are located at the base of the heart.

    <p>False</p> Signup and view all the answers

    The atria and ventricles are divided by an interventricular septum.

    <p>False</p> Signup and view all the answers

    The ventricles receive blood from the atria when they are contracted.

    <p>False</p> Signup and view all the answers

    The right ventricle pumps blood to the body.

    <p>False</p> Signup and view all the answers

    The ventricles receive blood from the ______ when relaxed

    <p>atria</p> Signup and view all the answers

    The ______ ventricle pumps blood to the body

    <p>left</p> Signup and view all the answers

    The right ventricle pumps blood to the [blank)

    <p>lungs</p> Signup and view all the answers

    The left and right ventricles are divided by an ______ septum

    <p>interventricular</p> Signup and view all the answers

    The ventricles pump blood out of the heart when they are ______

    <p>contracted</p> Signup and view all the answers

    What is the main function of the heart valves?

    <p>To ensure one-way flow of blood through the heart</p> Signup and view all the answers

    Where are the atrioventricular valves located?

    <p>Between the atria and the ventricles</p> Signup and view all the answers

    What type of valve is found in the pulmonary artery and aorta?

    <p>Semi-lunar valve</p> Signup and view all the answers

    What is the structure of the heart valves composed of?

    <p>Leaflets or cusps</p> Signup and view all the answers

    What is the purpose of the heart valves during ventricular contraction and relaxation?

    <p>To prevent backflow of blood</p> Signup and view all the answers

    What is the main purpose of the heart valves during ventricular contraction and relaxation?

    <p>To prevent backflow of blood and ensure one-way flow</p> Signup and view all the answers

    Where are the semi-lunar valves located in the heart?

    <p>In the arteries leaving the heart</p> Signup and view all the answers

    What is the characteristic shape of the heart valves?

    <p>Leaflet-shaped</p> Signup and view all the answers

    What is the location of the atrioventricular valves in the heart?

    <p>Between atria and ventricles</p> Signup and view all the answers

    What is the function of the heart valves in ensuring a healthy circulation?

    <p>To prevent backflow of blood and ensure one-way flow</p> Signup and view all the answers

    What is the primary function of the atrioventricular valves?

    <p>To prevent backflow of blood from the ventricle into the atrium</p> Signup and view all the answers

    What is the characteristic shape of the semi-lunar valves?

    <p>Half moon</p> Signup and view all the answers

    How many cusps does the right AV valve have?

    <p>3</p> Signup and view all the answers

    What is the purpose of the aortic valve?

    <p>To prevent backflow of blood from the aorta into the ventricle</p> Signup and view all the answers

    What is the name of the left AV valve?

    <p>Mitral valve</p> Signup and view all the answers

    What is the main function of the atrioventricular (AV) valves?

    <p>Prevent backflow of blood from the ventricle into the atrium when the ventricle relaxes</p> Signup and view all the answers

    What is the function of the semi-lunar valves in the heart?

    <p>Prevent backflow of blood from the arteries into the ventricle when the ventricle contracts</p> Signup and view all the answers

    How many cusps does the left AV valve, commonly called mitral, have?

    <p>2 cusps</p> Signup and view all the answers

    Where are the semi-lunar valves located in the heart?

    <p>In the arteries leaving the heart</p> Signup and view all the answers

    What is the primary purpose of the aortic valve in the heart?

    <p>Prevent backflow of blood into the ventricle when the ventricle relaxes</p> Signup and view all the answers

    The aortic valve prevents backflow of blood from the aorta into the ventricle when the ventricle relaxes.

    <p>True</p> Signup and view all the answers

    The left AV valve is commonly called bicuspid and has three cusps.

    <p>False</p> Signup and view all the answers

    Semi-lunar valves are situated between the ventricles and the atria in the heart.

    <p>False</p> Signup and view all the answers

    The right AV valve, commonly called tricuspid, has two cusps.

    <p>False</p> Signup and view all the answers

    The function of the AV valves is to prevent backflow of blood from the atria into the ventricles during contraction.

    <p>True</p> Signup and view all the answers

    Match the heart valve with its location in the heart:

    <p>Right AV valve (tricuspid) = Between the right atrium and right ventricle Left AV valve (mitral) = Between the left atrium and left ventricle Aortic valve = In the aorta Pulmonic valve = In the pulmonary artery</p> Signup and view all the answers

    Match the heart valve with its function:

    <p>Right AV valve (tricuspid) = Prevents backflow of blood from the right ventricle into the right atrium when the ventricle contracts Left AV valve (mitral) = Prevents backflow of blood from the left ventricle into the left atrium when the ventricle contracts Aortic valve = Prevents backflow of blood from the aorta into the left ventricle when the ventricle relaxes Pulmonic valve = Prevents backflow of blood from the pulmonary artery into the right ventricle when the ventricle relaxes</p> Signup and view all the answers

    Match the type of valve with its characteristic shape:

    <p>Right AV valve (tricuspid) = Commonly called tricuspid – 3 cusps Left AV valve (mitral) = Commonly called mitral – 2 cusps Aortic valve = Semi-lunar shape Pulmonic valve = Semi-lunar shape</p> Signup and view all the answers

    Match the heart valve with the chamber it separates:

    <p>Right AV valve (tricuspid) = Right atrium and right ventricle Left AV valve (mitral) = Left atrium and left ventricle Aortic valve = Aorta and left ventricle Pulmonic valve = Pulmonary artery and right ventricle</p> Signup and view all the answers

    Match the heart valve with what it prevents:

    <p>Right AV valve (tricuspid) = Backflow of blood from the right ventricle into the right atrium when the ventricle contracts Left AV valve (mitral) = Backflow of blood from the left ventricle into the left atrium when the ventricle contracts Aortic valve = Backflow of blood from the aorta into the left ventricle when the ventricle relaxes Pulmonic valve = Backflow of blood from the pulmonary artery into the right ventricle when the ventricle relaxes</p> Signup and view all the answers

    What is the main function of the cord-like tendons in the heart?

    <p>To prevent the valve leaflets from opening backwards into the atrium</p> Signup and view all the answers

    Where are the chordae tendinae attached to?

    <p>The papillary muscles</p> Signup and view all the answers

    What is the term for the nipple-like structures in the heart?

    <p>Papilla</p> Signup and view all the answers

    During which phase of the cardiac cycle do the chordae tendinae play a crucial role?

    <p>Ventricular contraction</p> Signup and view all the answers

    What type of valves do the chordae tendinae work with to prevent backflow?

    <p>Atrioventricular valves</p> Signup and view all the answers

    The ______ tendons maintain the position of the valve leaflets during ventricular contraction.

    <p>cord-like</p> Signup and view all the answers

    The chordae tendinae are attached to the ______ muscles.

    <p>papillary</p> Signup and view all the answers

    The papillary muscles can contract and relax a small amount to help support the ______ tendinae.

    <p>chordae</p> Signup and view all the answers

    The term ______ refers to the nipple-like structures in the heart.

    <p>papilla</p> Signup and view all the answers

    The AV valves are found in the heart and have ______ tendons that prevent backflow.

    <p>cord-like</p> Signup and view all the answers

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