Chapter 18 Modules Part 1
What is the purpose of the chordae tendineae?
Anchor the AV valves in the closed position
Indicate the valve separating the following areas of the heart: Left ventricle and aorta.
Aortic semilunar valve
Match the area of the heart with the "exit" through which the blood leaves: Left ventricle.
Aortic semilunar valve
Indicate the valve separating the following areas of the heart: Left atrium and left ventricle.
Bicuspid (mitral) valve
Match the following structure with its description: Endocardium.
Glistening white sheet of endothelium lining the inside of the heart
Match the following structure with its description: Fibrous pericardium.
Loosely fitting superficial part of the sac enclosing the heart
Match the following structure with its description: Myocardium.
Middle layer of the heart, composed mainly of cardiac muscle
Failure of which heart valve would allow blood to move from the left ventricle to the left atrium?
Mitral (bicuspid) valve
Match the area of the heart with the "exit" through which the blood leaves: Left atrium.
Mitral (bicuspid) valve
Which of the following structures lies on the outside surface of the heart and is an integral part of the heart wall?
The epicardium
Which of the following statements is not true about the shape, position, and location of the heart?
The heart is enclosed in a double-layered sac called the pleural membrane.
What part of the heart is considered the systemic circuit pump?
The left ventricle
Which of the following valves is most often faulty in the heart?
The mitral, or bicuspid, valve
Match the following structure with its description: Serous pericardium.
Thin, slippery, two-layered membrane
Indicate the valve separating the following areas of the heart: Right atrium and right ventricle.
Tricuspid Valve
The lining of the heart chambers is called the __________.
endocardium
The superior chambers of the heart are called the __________.
atria
What makes the heart valves open and close?
blood pressure
The __________ are attached to the AV valve flaps.
chordae tendineae
The vessels that carry oxygen to the myocardium are called __________.
coronary arteries
The interventricular septum forms a dividing wall between the __________.
left and right ventricles
The walls of the __________ are thicker than the walls of any other heart chamber.
left ventricle
When the mitral valve closes, it prevents the backflow of blood from the __________.
left ventricle into the left atrium
The inner lining of the fibrous pericardium is formed by the __________.
parietal layer of serous pericardium
A condition in which the valve flaps of the heart become stiff and constrict the opening is called _________.
stenosis
Match the area of the heart with the "exit" through which the blood leaves: Right atrium.
tricuspid valve
The trabeculae carneae are located in the __________.
ventricles
Which is the correct sequence of layers in the heart wall, starting with the outer layer?
Epicardium, myocardium, endocardium
Match the following structure with its description: Epicardium.
Inner layer of pericardium (called the visceral layer)
Which of the following is not a role of the pericardium?
It facilitates heart contraction.
Match the area of the heart with the "exit" through which the blood leaves: Right ventricle.
Pulmonary semilunar valve
What muscles prevent the atrioventricular valves from everting during ventricular contraction?
Papillary muscles
Match the following term with its correct description: Aortic semilunar valve.
Prevents backflow of blood into the left ventricle
Match the following term with its correct description: Pulmonary semilunar valve.
Prevents backflow of blood into the right ventricle
Indicate the valve separating the following areas of the heart: Right ventricle and pulmonary trunk.
Pulmonary semilunar valve
Identify the correct sequence of blood flow through the chambers of the heart.
Right atrium, right ventricle, lungs, left atrium, left ventricle
Match the following term with its correct description: Mitral valve.
Valve between the left atrium and left ventricle
Match the following term with its correct description: Tricuspid valve.
Valve between the right atrium and right ventricle
