Exam 28: Heart

Diastasis is a term used to describe a longer period of slow ventricular filling as ventricular diastole ends.

Match each part of the conduction system of the heart to the description of its location or function. -Structure that is located below the atrial epicardium at its junction with the superior vena cava

Hypokalemia can cause an increase in the size of which of the following?

What part of the heart should serve as the normal pacemaker?

Match each term related to heart circulation with its corresponding location or description. -Blood vessel that carries blood from the lungs to the heart

If damaged, which valve could allow blood to leak back into the right atrium?

A heart murmur is one type of abnormal sound.

A drop in blood oxygen levels will stimulate an increase in the heart rate.

Define cardiac tamponade and explain how it can affect the heart.

Cardiac tamponade is a serious compression of the heart.

Name and describe the three layers of the heart wall.

If damaged, which valve could allow blood to leak back into the left ventricle?

The period between the closure of the semilunar valve and the opening of the atrioventricular valves is called:

Which of the following would not cause an ectopic beat?

The lower part of the heart forms a blunt point known as the base.

The sinoatrial node is in the right atrium, where the superior vena cava attaches.

In electrocardiography, only the contraction of the cardiac muscle causes a deflection.

The last wave in an ECG terminates the cardiac cycle; because of this, it is called the T wave.

The AV node of the heart is known as the pacemaker.

Atria receive blood from veins, and ventricles pump blood into arteries.