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chapter 6
| Question | Answer |
|---|---|
| The internal lining of the heart consists of a smooth, delicate membrane called the exocardium. | False |
| The mitral valve lies between the right atrium and left atrium. | false |
| Coronary veins provide the heart muscle with a reliable blood supply. | false |
| Blood flows through two routes: the systemic circulation and the pulmonary circulation. | true |
| Arterioles lead into , the connecting link between arteries and veins. | true |
| The walls of arteries are muscular, thick, strong, elastic, and are lined with endothelium. | true |
| Arterioles can change their diameter by constricting or dilating, which alters blood flow to the tissues. | true |
| Lipids include cholesterol, phospholipids, and triglycerides. | true |
| The most common cause of arteriosclerosis is atherosclerosis. | true |
| The danger of an aneurysm is the tendency to increase in size and rupture. | true |
| Hypertension is the most common cardiovascular disorder. | true |
| Coronary heart disease is the leading cause of death worldwide. | true |
| An EKG can aid in identifying abnormalities in heart rate and rhythm, as well as areas of damaged heart tissue. | true |
| There are two types of cardiac arrhythmias, supraventricular and ventricular. | true |
| Ventricular arrhythmias are more serious and potentially life threatening than other types of arrhythmias. | true |
| Heart block occurs when the atria and ventricles contract independent of each other. | true |
| Treatment for congestive heart failure cannot cure or reverse the condition. | true |
| The signs and symptoms of congestive heart failure include ankle swelling and shortness of breath with exertion. | true |
| The valve between the right atrium and right ventricle is named because it has _____. | three cusps |
| A small patch of tissue called the _____ acts as the pacemaker of the heart. | sinoatrial node |
| The superior and inferior _____ deliver systemic blood to the right atrium. | venae cavae |
| Listening through a stethoscope for abnormal hearts sounds is an example of _____. | auscultation |
| _____ employs an injected contrast material that permits imaging of blood vessel function. | Coronary arteriography |
| is the major cholesterol carrier in the blood, and is also known as "bad" cholesterol. | LDL |
| In _____, artery walls thicken and become hard and inflexible. | arteriosclerosis |
| Raynaud's disease is a disorder of the arteries in the _____. | fingers and toes |
| Hypertension is broadly defined as an arterial pressure greater than _____ on at least three consecutive measures. | 140/90 |
| _____ veins are small, dense networks of veins that appear as red or blue discolorations on the skin. | Spider |
| One of the symptoms of CHD is _____, a sensation of a rapid pounding hearbeat. | palpitations |
| _____ is a procedure used to open a partly occluded artery. | Angioplasty |
| Acute forms of endocarditis involve the formation of nodules, or _____. | vegetations |
| _____ is a sustained heart rate greater than 100 beats per minute. | Tachycardia |
| _____ is the most common heart rhythm disorder. | Atrial fibrillation |
| The clamping of the umbilical cord and removal from the placental circulation causes an increase in _____ pressure. | left ventricular |
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