A&P Ch 11 Review

The heart is situated within the medial section of the thoracic cavity known as the ________.

• pleural cavity

• diaphragm

• hiatus

• hilus

• mediastinum

What is the muscular layer of the heart wall?

• myocardium

• epicardium

• fibrous pericardium

• endocardium

The two superior receiving chambers of the heart are known as the ________, while the two inferior discharging chambers of the heart are known as the ________.

• atria and ventricles

• ventricles and atria

• aorta and vena cava

• vena cava and aorta

The walls of the ________ are substantially thicker because that chamber acts as the more powerful systemic pump of the heart.

What structure divides the left ventricle from the right ventricle?

• interatrial septum

• interventricular septum

• tricuspid valve

• chordae tendineae

• bicuspid valve

Large veins have ________ to prevent the backflow of blood.

What are the tiny white cords that anchor the cusps or flaps of endocardium to the walls of the ventricles?

• Tendons

• Ligaments

• Chordae tendineae

• Myofibrils

Which valve is closed during heart relaxation to prevent blood from backflowing from the aorta into the heart?

• pulmonary semilunar valve

• aortic semilunar valve

• bicuspid (mitral) valve

• tricuspid valve

Which valve is located between the right atrium and right ventricle?

Veins draining the head and arms empty into the ________, which carries blood to the right atrium of the heart.

• inferior vena cava

• great saphenous vein

• superior vena cava

• common iliac vein