Cardiac CH17

Deoxygenated blood from the body returns to the:

• right atrium.
• right ventricle.
• left atrium.
• left ventricle.

Which of the following blood vessels transports oxygenated blood?

• Superior vena cava
• Pulmonary arteries
• Inferior vena cava
• Pulmonary veins

The electrical impulse generated by the heart originates in the:

• bundle of His.
• coronary sinus.
• sinoatrial node.
• atrioventricular node.

In contrast to the sympathetic nervous system, the parasympathetic nervous system:

• prepares the body to handle stress.
• causes an increase in the heart rate.
• slows the heart and respiratory rates.
• dilates the blood vessels in the muscles.

The right coronary artery supplies blood to the:

• left ventricle and inferior wall of the right atrium.
• right ventricle and inferior wall of the left ventricle.
• right atrium and posterior wall of the right ventricle.
• left ventricle and posterior wall of the right ventricle.

The iliac arteries immediately subdivide into the:

• femoral arteries.
• peroneal arteries.
• anterior tibial arteries.
• posterior tibial arteries.

Narrowing of the coronary arteries caused by a buildup of fatty deposits is called:

• angina pectoris.
• arteriosclerosis.
• acute ischemia.
• atherosclerosis.

Angina pectoris occurs when:

• a coronary artery is totally occluded by plaque.
• myocardial oxygen demand exceeds supply.
• one or more coronary arteries suddenly spasm.
• myocardial oxygen supply exceeds the demand.

The MOST common reason that many people experiencing AMI do not seek immediate medical attention is because they:

• are elderly.
• are in denial.
• cannot afford it.
• do not trust EMTs.

When documenting a patient's description of his or her chest pain or discomfort, the EMT should:

• use medical terminology.
• use the patient's own words.
• underline the patient's quotes.
• document his or her own perception.