The Heart Part One

Where does the apex of the heart lie?

• Right of the midline

• Left of the midline

• Superior to the midline

• Inferior to the midline

The ventricles receive blood from the pulmonary circuit.

• True

• False

Name the two primary layers of the pericardium. Put an "and" between the two answers.

Which corner of the heart lies at the costal cartilage of the sixth rib lateral to the sternum?

• Superior right

• Superior left

• Inferior right

• Inferior left

The three layers of the heart wall are the epicardium, myocardium and endocardium.

• True

• False

The internal divisions of the heart chambers include the following:

• Coronary sulcus and Interatrial septa

• Interatrial septa and Anterior interventricular septa

• Interventricular septa and Interatrial septa

• Coronary sulcus and Interventricular septa

Pectinate muscles:

• Ridges inside anterior of right atrium

• Remnant of foramen ovale

• Landmark used to locate veins entering right atrium

• Main heart muscles

Crista terminalis is used to locate veins entering left atrium.

• True

• False

The "lub-dup" sound of the heart is the semilunar valves closing, followed by the AV valves.

• True

• False

Which heart chamber has the thickest wall?