Chapter 18 Modules Part 1

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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


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