PHS Cardiovascular System

The movement of the electrical impulse in the heart can be used to detect abnormal activity or disease.

• True
• False

The smallest branches of arteries are called arterioles.

• True
• False

Plasma is approximately 75 percent water with many suspended substances.

• True 
• False

Hemoglobin carries both oxygen and carbon dioxide.

• True
• False

Hypotension is high blood pressure.

• True
• False

Aplastic anemia is a result of injury to or destruction of the bone marrow.

• True
• False

Arteriosclerosis is a ballooning out of, or saclike formation on, an artery wall.

• True
• False

A common symptom of a myocardial infarction is a severe, crushing pain that radiates to the arm, neck, and jaw.

• True
• False

Sickle cell anemia is a chronic, inherited anemia that occurs almost exclusively among African Americans.

• True
• False

Arrhythmias are abnormal heart rhythms and can be mild to life threatening.

• True
• False