Heart Quiz
Preview:
Which circuit carries blood from the right ventricle to the lungs for gas exchange and returns it to the left atrium of the heart?
A. Coronary
B. Systemic
C. Pulmonary
D. Lymphatic
E. Fetal
Which of the following has a strong, positive inotropic effect, meaning it increases the strength of each contraction of the heart?
A. Hypocalcemia
B. Hypercalcemia
C. Hyperkalemia
D. Myocardial hypercapnia
E. Myocardial hypoxia
As exercise progresses, muscular activity __________ venous return. This increases the __________ on the right ventricle.
A. decreases; preload
B. increases; afterload
C. increases; preload
D. decreases; afterload
E. decreases; midload
Heart sound __________ is thought to result from the transition from expansion of the empty ventricles to their sudden filling with blood.
A. S1
B. S2
C. S3
D. S4
E. S0
Which of the following is the correct formula for calculating cardiac output?
A. HR – SV
B. HR-SV/SV
C. HR/SV
D. HR + SV
E. HR x SV
What is the broad flat superior top portion of the heart called?
A. Base
B. Apex
C. Border
D. Origin
What is the ability to rhythmically depolarize without outside stimulation called?
A. Autorhythmic
B. Automatic
C. Myogenic
D. Contractile
E. Autonomic
If a person’s heart is pumping 5000 mL of blood in one minute and the heart rate is 50 beats per minute, what is the cardiac output?
A. 250,000 mL/min
B. 25,000 mL/min
C. 100 mL/min
D. 1000 mL/min
E. None of these are correct.
What is the double-walled sac that surrounds the heart called?
A. Fibrocardium
B. Endocardium
C. Epicardium
D. Pericardium
E. Pericardial cavity
The difference between the maximum and resting cardiac output is called __________.
A. preload
B. stroke volume
C. contractility
D. afterload
E. cardiac reserve
The amount of tension in the ventricular myocardium immediately before it contracts is called _________.
A. contractility
B. afterload
C. preload
D. cardiac reserve
E. None of the choices is correct.
Which term refers to relaxation of the heart?
A. Diastole
B. Systole
C. Asystole
D. Fibrillation
E. Bradycardia
What is the study of the heart and its disorders called?
A. Myology
B. Hematology
C. Angiography
D. Cardiology
E. Pulmonology
If the right ventricle begins to pump an increased amount of blood, this soon arrives at the left ventricle, stretches it more than before, and causes it to increase its stroke volume and match that of the right. This is an example of __________.
A. preload
B. afterload
C. contractility
D. cardiac reserve
E. None of the choices are correct.
The passage of blood from the atria to the ventricles is regulated by which valves?
A. Interventricular
B. Interatrial
C. Semilunar
D. Atrioventricular
E. Pulmonary
