The Cardiovascular System 11-1

The partition where the bundle branches are located is called the ____.

• left atrioventricular groove

• interventricular septum

• interatrial septum

• right atrioventricular groove

The pointed, inferior portion of the heart, known as the ____, resets on the diaphragm and is oriented toward the left hip.

• base

• mediastinum

• apex

• pericardium

The visceral layer of the serous pericardium is actually the same layer as the ____.

• epicardium

• fibrous pericardium

• myocardium

• 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 ____.

• ventricles

  atria

• atria

  ventricles

• arteries

  veins

• veins

  arteries

The valves located between the atria and ventricles are known as the ____ valves.

• pulmonary

• atrioventricular (AV)

• aortic

• semilunar

Blood leaves the left ventricle through an artery known as the ____.

• pulmonary trunk

• superior vena cava

• aorta

• coronary sinus

The transportation of blood from the right side of the heart to the lungs and back to the left side of the heart is known as ____ circulation.

• systemic

• cardiac

• pulmonary

• coronary

The tiny white cords that anchor the cusps or flaps of endocardium to the walls of the ventricles are called the ____.

• chordae tendineae

• ductus venosus

• ligamentum arteriosum

• myocardium

Oxygenated blood nourishing the myocardium comes from vessels that branch off the aorta called ____.

• pulmonary arteries

• pulmonary veins

• coronary arteries

• venae cavae

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

• left atrium

• left ventricle

• right atrium

• right ventricle