040-444 Online Practice Questions and Answers

The three principal mechanisms for increasing venous return during dynamic exercise are

A. A decrease in SV, HR, and compliance of the vascular system.

B. Venoconstriction, pumping action of muscle, and the pumping action of the respiratory system.

C. An increase in vascular resistance, increase in HR, and decrease in blood pressure.

D. None of the above.

During exercise, SV increases as a result of

A. The Frank-Starling law.

B. Increased HR.

C. Increased ejection fraction.

D. Increased pulmonary artery pressure

Increased after load associated with increased peripheral resistance as a result of aging causes

A. Left ventricular hypertrophy.

B. Kidney failure.

C. Liver damage.

D. Liver failure.

Modifiable primary risk factors for CAD include

A. Hypertension,dyslipidemia, advancing age, and tobacco smoking.

B. Homocysteine, lipoprotein( a), C-reactive protein, and t- P A.

C. Obesity, DM, tobacco smoking, and sedentary lifestyle.

D. Tobacco smoking,dyslipidemia, hypertension, and homocysteine.

All of the following are considered possible causes of restrictive lung disease EXCEPT

A. Scoliosis.

B. Obesity.

C. Muscular dystrophy.

D. Cigarette smoke.

Lead V is located at the

A. Fifthintercostal space, left sternal border.

B. Midclavicular line, fourth intercostal space.

C. Fourthintercostal space, right sternal border.

D. Midclavicular line, lateral to the xiphoid process.

In preventing injuries, hydration is very important, because

A. It controls breathing and theValsalva maneuver.

B. It helps to regulate carbohydrate utilization during cardiovascular exercise.

C. It helps to regulate body temperature and electrolyte balance.s

D. It helps to prevent blood pooling during the cool-down.

Right-axis deviation may be caused by

A. Acutepericarditis.

B. Rightatrial enlargement.

C. Chronic obstructive pulmonary disease.

D. Cardiomyopathy.

Myocardial cells can be excited in response to all of the following stimuli EXCEPT:

A. Electrical

B. Chemical

C. Mechanical

D. Emotional

The P wave on the ECG can be

A. Negative

B. Positive

C. Isoelectric

D. Either positive or negative