Human Heart and Heart Conduction System

The pointed, inferior portion of the heart, known as the ________ rests on the diaphragm and is oriented towards the left hip.

• base
• mediastinum
• apex
• pericardium

The two superior receiving chambers of the heart are known as the _________

• atria
• ventricles

The valves between the atria and ventricles are known as the ________ valves.

• atrioventricular
• aortic
• semilunar
• pulmonary

Blood leaves the right ventricle through the ___________.

• pulmonary trunk
• aorta
• superior vena cava
• coronary sinus

The term that means heart contraction is ________.

• diastole
• systole
• tachycardia
• fibrillation

Large blood vessels that carry blood away from the heart are called:

• arteries
• capillaries
• veins
• venae cavae

Arteries are normally depicted as red while veins are colored blue.  The exceptions to this rule are the _______ arteries and veins.

• systemic
• hepatic
• coronary
• pulmonary

Pulmonary circulation involves blood flow to and from the heart and the _______.

• body
• digestive organs
• brain
• lungs

When the ventricles contract, the bicuspid (mitral) valve prevents blood from flowing from the ________.

• right ventricle to right atrium
• left ventricle to left atrium
• left atrium to the right atrium
• right atrium to the left atrium

The sinoatrial node is located in the ________.

• aorta
• right atrium
• left atrium
• right ventricle